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2 years ago

40 POINTS is (4,7) a solution of equations? Explain your answer 2x+4y=36 3x-4y=-6

2 answers:

dsp732 years ago

6 0

2x + 4y = 36
3x - 4y = -6
--------------add
5x = 30
x = 6

2x+4y=36
2(6)+4y=36
12 + 4y = 36
4y = 24
y = 6

answer
(6, 6) is a solution of equations
(4,7) is NOT a solution of equations

Alona [7]2 years ago

5 0

using (4,7)

2(4) +4(7) = 8 +28 =36 True

3(4) - 4(7) = 12 -28 =-16 False (-16 is not -6)

(4,7) is not a solution

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