Question

Как решить:|9х-18|=27

Answer 1

9х-18=27
9х-18=-27
9х=27+18
9х=-27+18
9х=45
9х=-9
х=5
х=-1

Answer 2

9x-18=-27.
9x=-27+18
9x=-45
X=-5

9x-18=27
9x=27+18
9x=45
X=5