Помогите 1)7(х+6)=4(5х+4) 4)1,5(х+8)=-4х+1 5)3\4(х+8)=2х+1
1) 7Х+42 =20Х+16 7Х-20Х = -42 +16 - 13Х = -26 13Х = 26 Х= 2 2)1,5Х + 12 = -4Х +1 1,5Х + 4Х = -12 +1 5,5 Х = - 11 Х = - 2 3) 0,75Х + 6 = 2Х +1 (т.к. 3/4 = 0,75) 0,75Х - 2Х = -6 +1 - 1,25Х = -5 1,25Х = 5 Х = 4