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

User Etienne Neveu
by
9.1k points

2 Answers

4 votes
-3(4)+9y=-57
-12+9y=-57
9y=-45
y=-5
User Cody Piersall
by
6.8k points
5 votes
-12 + 9y = -57

add 12 to both sides, 9y = -45

divide 9 from both sides to isolate the y

y = -5
User Cruisepandey
by
7.1k points
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