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Mamont248 [21]
3 years ago
9

8x+15=3x-20 please explain how to solve this

Mathematics
2 answers:
vladimir1956 [14]3 years ago
6 0

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
 
ANEK [815]3 years ago
5 0
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
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