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2 years ago

Find the value of y when x equals 4, -3x+9y=-57

Mathematics

2 answers:

Ivenika [448]2 years ago

4 0

-12 + 9y = -57

add 12 to both sides, 9y = -45

divide 9 from both sides to isolate the y

y = -5

adoni [48]2 years ago

3 0

-3(4)+9y=-57
-12+9y=-57
9y=-45
y=-5

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