8 = 4 - 2x - 2x +5 = 17 12= - 3 ( x+ 5)

asked Jan 7, 2016 207k views

3 votes

8 = 4 - 2x
- 2x +5 = 17
12= - 3 ( x+ 5)

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1 vote

$8 = 4 - 2x\\8 + 2x = 4\\2x = -4\\x = -2$

$- 2x +5 = 17\\-2x =12\\x = -6$

$12= - 3 ( x+ 5)\\12 = -3x -15\\-3x =27\\x= -9$

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