Question

1,5(2x-5)+2x=5(0,5x-1,5)-10

Answer 1

3х-7,5+2х=2,5х-7,5-10
3х+2х-2,5=-7,5-10+7,5
-2,5х=5
х=0,5
__________________

3×0,5-7,5+2×0,5=2,5×0,5-7,5-10
ответ: {0,5}