Question

3x+2y-1 =0
5x+7y = 4​

Answer 1

Answer:

(i) 3x + 7y = 4 x + 2y = -1 (ii) 3x + y = 7 5x + 3y = 12Read more on Sarthaks.com - https://www.sarthaks.com/620638/solve-the-following-system-of-equations-by-matrix-method-i-3x-7y-4-x-2y-1-ii-3x-y-7-5x-3y-12

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Answer 2

Answer:

1. let 2y be 2x

3x+2x-1=0

5x-1=0

5x=1

x=1/5

put the value of x

3x=1/5×3

=3/5

2x=1/5

x=1/5×2

x=2/5

2. let 7y be7x

5x+7x=4

12x=4

x=4/12

x=1/3

put the value of x

5x=1/3×5

x=5/3

7x=1/3×7

x=7/3