4x-6y+4

-2x+7=-3y

solve using elimination

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4x-6y+4

-2x+7=-3y

solve using elimination

Tutors, please sign in to answer this question.

Assuming you mean...

4x-6y = 4

-2x+7=-3y

-2x+7=-3y

Solving by elimination, instead of substitution...

Put x and y on the same side of the second equation

-2x + 3y = -7

Multiply the bottom equation by 2

4x - 6y = 4

2(-2x + 3y) = 2(-7) => -4x +6y = -14

Add both equations together:

0 = -10

No solution.

This is why I posted the comment about you reposting the question.

If you change the -3y you posted into +3y, then of course it works out as Adam posted below.

Thus the reason I posted the comment asking you to verify that you posted the question correctly.

Have a great day.

Have a great day.

4x - 6y =4, solve for x

4x = 4 + 6y

x = 1 + (6/4)y

-2x +7 = 3y

-2(1 +6/4)y) + 7 = 3y (plug in solved value for x)

-2 - 3y +7 = 3y

-6y +5 = 0 (set equal to zero and combine like terms)

-6y = -5

x = 1 + (6/4)(5/6)

x= 1 + 30/24

x = 1 + 1.25

4x - 6y = 4

4(2.25) - 6(5/6) = 4

9 - 5 = 4

-2x + 7 = 3y

-2(2.25) + 7 = 3(5/6)

-4.5 +7 = 2.5

Adam,

When Taylor posted the question,

-2x+7= **-3y**

-2x+7=** 3y**

- Algebra 903
- Algebra Help 205
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- Substitution Method 20
- Linear Inequalities 12

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