5x+7y=-1 and 2x-3y=17 elimination method
step by step solving
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2
Step-by-step explanation:
5x+7y=-1 ----(1)
2x-3y=17 -----(2)
(1)*2
10x+14y=-2 -----(3)
(2)*5
10x-15y=85 ----(4)
(4)-(3)
-29y=87
y=87/-29
y=-3
from (2)
2x-3*-3=17
2x-9=17
2x=17+9
x=36/2
x=18
Answered by
1
5x + 7y = - 1 (multiply it with the coefficient of 2nd equation )
2x - 3y = 17 (multiply it with the coefficient of 1st equ )
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