е)7x-8=4x-(1-3x)
ж)3(x+4)=-4(x-3)

7x-8=4x-(1-3x)7x-8=4x-1+3x7x-8-4x+1-3x=00-7=0-7=03(x+4)=-4(x-3)3x+12=-4x+123x+12+4x-12=07x=0x=o : 7x=o