Решите уравнение
4x-12,8=0

7x-9=3x+7


1,6(5x-1)=1,8-4,7

1) 4х - 12.8 = 04х = 12.8 | : 4х = 3.22) 7х - 9 = 3х + 77х - 3х = 7 + 94х = 16 | : 4х = 43) 1.6 (5х - 1) =1.8-4.78 х - 1.6 = - 2.98х = -1.3 | : 8х = - 0.16

1)7х-9=3х+7 7х-3х=7+9. 4х=16 х=16:4. х=4.