Verified Answer :

8x + 15 = 3x - 20

First, take away '3x' from both sides.
\(8x + 15 - 3x = -20\)
Second, subtract '8x - 3x' to get '5x'.
\(5x + 15 = -20\)
Third, take away '15' from both sides.
\(5x = -20 - 15\)
Fourth, add '-20 - 15' to get '-35'.
\(5x = -35\)
Fifth, divide both sides by '5'.
\(x = \frac{35}{5}\)
Sixth, how many times does 5 go into 35? 35 ÷ 5 = 7.
\(x = -7\)

Answer: x = -7

AL2006


You said                                    8x + 15  =  3x - 20

Subtract  3x  from each side:    5x + 15  =      - 20

Subtract  15  from each side:    5x          =     - 35

Divide each side by  5 :               x         =     -  7