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ElenaW [278]
3 years ago
12

Solve the system of equation by elimination. 27= -3y + x 2 y=10 - 4x

Mathematics
1 answer:
rodikova [14]3 years ago
8 0

Answer:

x=6 y=-7

Step-by-step explanation:

rearrange the equation

3y=x-27 eq 1

2y=-4x+10 eq 2

Multiply eq 1 by 2, and eq 2 by 3

6y=2x-54

6y=-12x+30 subtract the two eq's

0=14x-84

84=14x

x=84÷14

<u>x=6</u>

solving for y sub. x either eq 1 or 2

3y=x-27

3y=6-27

3y=-21

y=-21÷3

<u>y=-7</u>

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subtitute

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