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4 votes
2x+3y=-7
8x-y=-15
(SUBSTITUTION ASAP)

User Arbulgazar
by
4.4k points

1 Answer

3 votes

x = -2, y = -1

Substitution method:

2x + 3y = -7

y = 8x + 15

2x + 3(8x + 15) = -7

2x + 24x + 45 = -7

26x = -52

x = -2

Substituting x value back into 1st equation for y:

2(-2) + 3y = -7

3y = -3

y = -1

User TheZver
by
5.0k points