Question

please help
1) Solve:
1. 6y + 2 – 4y = -18
Solve each equation for the given variable:
1. 3y + 5x = 4; y

Answer 1

3x+9y=12 --> x + 3y = 4 after dividing by 3
5x-4y=3
------------
x + 3y = 4
5x- 4y = 3
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To use elimination, get the coefficients of either x or y to match
Multiply the 1st eqn by 5:
5x +15y = 20
5x - 4y = 3
-------------- subtract
19y = 17
y = 17/19
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then sub for y in any eqn and find x.

Answer 2

That help?

Answer 3

Yep thanks