Request a call back

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

ICSE Class 9 Answered

How to solve 5x + 7y = 66                          2x - 3y = -20 By elimination method.  
Asked by eshaanbayale51.9spicertl | 02 Jun, 2020, 01:05: PM
answered-by-expert Expert Answer

5x + 7y = 66    ... (1)

2x - 3y = -20   ... (2)
 
Multiplying (1) by 3 and (2) by 7, we get
15x + 21y = 198 ... (3)
14x - 21y = - 140  .... (4)
 
Adding (3) and (4), we get
 
19x = 58
→ x = 2
 
From (1),
5(2) + 7y = 66
→ 7y = 56
→   y = 8
 
The solution is x = 2 and y = 8.
Answered by Yasmeen Khan | 02 Jun, 2020, 01:33: PM
ICSE 9 - Maths
Asked by praveensaxena2009 | 28 May, 2022, 03:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by kumarijanvi242004 | 28 Feb, 2021, 09:04: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by Anandusree73 | 06 Jan, 2021, 04:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by kcbhuvan94 | 23 Sep, 2020, 03:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by sannidhraj2004 | 16 Sep, 2020, 11:15: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by deepvishal771 | 27 Jul, 2020, 11:26: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by eshaanbayale51.9spicertl | 02 Jun, 2020, 01:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Asked by eshaanbayale51.9spicertl | 02 Jun, 2020, 01:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×