How to isolate the variable in the equation -2/3n + 7 = 15 lesson 6-2

n=-4/3

Step-by-step explanation:

So the equation is -2/3n+7=15

First you subtract 7 from both sides: -2/3n+7-7=15-7 : -2/3n=8

Next multiply by 1/-2 on both sides, canceling out the -2 on the left and dividing 8 by -2 on the right: 3n=-4

Next divide by 3 on both sides

n=-4/3

47 - 90 = 43

43 - 180 = x

x = 137

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2