First move the (Y) to the other side of the equal sign,

Then subtract add (15) on both sides

Since a variable can't be negative just divide by (-1) on both sides,

The answer would be,

Hope this helped
:D
Step-by-step explanation:
log(x+2)-log(x-1)=log2
log(x+2)/(x-1)=log2
=> (x+2)=2(x-1)
=>x+2 =2x-2
=> x=4

= -7 Multiply both sides by 10
x = -70
C. x = -70
Answer:
c
Step-by-step explanation:
Answer:
x = -6
Step-by-step explanation:
-5(x + 3) = 15
Distribute the -5
-5x -15 =15
Add 15 to each side
-5x-15+15 =15+15
-5x = 30
Divide each side by -5
-5x/-5 = 30/-5
x =-6