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katen-ka-za [31]
3 years ago
11

Complete the solution of the equation. find the value of y when x equals 4 -3x +9y = -57

Mathematics
1 answer:
Kazeer [188]3 years ago
4 0

Answer:

y = -5

Step-by-step explanation:

-3x +9y = -57

Let x = 4

-3*4 +9y = -57

-12 +9y = -57

Add 12 to each side

-12+12 +9y = -57+12

9y = -45

Divide each side by 9

9y/9 = -45/9

y = -5

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