1) х-1/4=3/8 + 1/2x 2) x=-x

(4-7х)/15+(1-х/3=4-(2х+1)/5(•15)15•(4-7х)/15+(1-х)•15/3=4•15-(2х+1)•15/54-7х+5(1-х)=60-3(2х+1)4-7х+5-5х=60-6х-3-7х-5х+6х=60-3-4-5-6х=48. х=(-6) х=-8