Question

|-2-x|+3=10

10-2.|-x+3=8

Answer 1

|-2-x|+3=10

=> |-2-x|=7

+) -2-x=7

=> x=-2-7

=> x=-9

+) -2-x=-7

=> x=-2-(-7)

=> x=-2+7

=> x=5

Vậy x \(\in\){-9; 5}.

10-2.|-x+3|=8

=> 2.|-x+3|=2

=> |-x+3|=1

+) -x+3=1

=> -x=1-3

=> -x=-2

=> x=2

+) -x+3=-1

=> -x=-1-3

=> -x=-4

=> x=4

Vậy x thuộc {2; 4}.

Answer 2

|-2 - x| + 3 = 10

|-2 - x| = 7

TH1: -2 - x = -7

x = 5

TH2 : -2 - x=  7

x = -9