ICSE Class 9 Answered
5x+7y=66 2x-3y=-20
Asked by natashagupta50.9spicertl | 29 May, 2020, 06:50: PM
Expert Answer
5x + 7y=66 .... (i)
2x - 3y=-20 .... (ii)
Multiply (i) by 3 and (ii) by 7, we get
15x + 21y =198 ... (iii)
14x - 21y = -140 ... (iv)
Adding (iii) and (iv), we get
29x = 58
→ x = 2
From (ii),
3y = 2(2) + 20
→ 3y = 24
→ y = 8
The solution of the given simultaneous linear equations is x = 2 and y = 8.
Answered by Yasmeen Khan | 29 May, 2020, 07:02: PM
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