Question

решите 3x-12=7x-26
2(x-7)=13(x+3)

Answer 1

3x-12=7x-26
3х-7х=-26+12
-4х=-14
х=7/2
х=3.5

2(x-7)=13(x+3)
2х-14=13х+39
2х-13х=39+14
-11х=53
х=-53/11