Explain how to isolate the variable in the equation -2/3n + 7 = 15

Mathematics

1 answer:

vodka [1.7K]3 years ago

7 0

Answer:

n = -12

Step-by-step explanation:

(-2/3)n + 7 = 15

(-2/3)n+7-7 = 15-7 Subtract by 7 on both sides

(-2/3)n = 8 Multiply by the reciprocal of the fraction, which is

(-2/3)n*(-3/2) = 8(-3/2) This makes it so you get n *1 and isolates n.

n = -24/2 = -12

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