Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 8 Answered

Solve the following simultaneous linear equation: 9x=62+8y;3y=52-2x
Asked by Cl_narayan | 15 Jan, 2020, 10:06: AM
answered-by-expert Expert Answer
9x=62+8y  → 9x - 8y = 62   ... (i)
3y=52-2x   → 2x + 3y = 52  ... (ii)
Multiplying equation (i) by 8 and (ii) by 3, we get
 
16x + 24y = 416 ... (iii)
27x - 24y = 186 ... (iv)
Adding (iii) and (iv), we get
43x = 602 → x = 14 
Substitute x = 14 in equation (i), we get
 
28 + 3y = 52  → y = 8 
Answered by Yasmeen Khan | 15 Jan, 2020, 10:49: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 8 - Maths
2p/3-p/5=11 1/3
question image
Asked by kurmaramulu589 | 24 Aug, 2023, 21:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
ICSE Class 8 Maths Linear Equations The answer maybe rechecked. Ans: Let B's age= x Then A's age= x+5 5years ago: B's age was= (x-5)yrs A's age was= (x+5-5)yrs = x yrs As per question: A's age/B' age= 3/2 x/x-5=3/2 2x=3x-15 3x-2x=15 B's Present age = x=15 yrs(Ans) A's present age= x+5= 15+5= 20 yrs(Ans) But, The answer given in the uploaded video are 5 yrs and 10 yrs Please recheck this.  
Asked by casumitbarman | 05 Apr, 2023, 21:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
the digits of a two-digit number differ by 3 if the digits are interchanged and the resulting number is added to the original number we get 121 find the original number
Asked by prajittm | 20 Sep, 2021, 17:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
Please explain this
question image
Asked by tishika.thatre | 22 Dec, 2020, 01:30: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
The sum of 3 consecutive multiples of 7 is 777, one multiple among the three multiples is  
Asked by anil.wgl.msn | 25 Nov, 2020, 10:21: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
rohits mother age is five times rohits age. if the sum of their ages is 66.find the ages of rohit and his mother
Asked by bhwanapathania1992 | 31 Aug, 2020, 16:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
The sum of three consecutive multiples of 7 is 777. Find the three numbers
Asked by Bateelalmeena | 03 Mar, 2020, 23:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
The base of an isosceles triangle is 3 cm longer than each of other sides if the perimeter is 54 cm find the length of its sides
Asked by vikascharasia2424 | 29 Feb, 2020, 15:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
The difference between the two numbers is 7. Two times the smaller number added to the larger number gives 22. Find the two numbers. 
Asked by Cl_narayan | 06 Feb, 2020, 18:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Maths
One number is three times the other number. The difference between the two numbers is 12. Find the two numbers. 
Asked by Cl_narayan | 06 Feb, 2020, 18:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Customised test packs for Teachers, Parents, and Students. Click here for details!
×