Answer:
3Ax-6x = 15
3x(A-2)=15
If A were 2, the left side of the equation would be 0 and it wouldn't equal 15 no matter what the value of x is. So A is 2
Answer:
x =9
Step-by-step explanation:
-5x = -45
Divide both sides by -5:
x = 9
Answer:
x=4-
, x=4+
Step-by-step explanation:
(x^2-8x+16)-16-7=0
(x-4)^2=23
x=4-
, x=4+