А)-2,8*(3х+7)-4,2=1,4
– 8.4x – 19.6 – 4.2 = 1.4
– 8,4x = 1,4 + 4,2 + 19,6
-8.4x = 25.2
x = -3
А)-2,8*(3х+7)-4,2=1,4 – 8.4x – 19.6 – 4.2 = 1.4 – 8,4x = 1,4 + 4,2 + 19,6 -8.4x = 25.2 x = -3
А)-2,8*(3х+7)-4,2=1,4
– 8.4x – 19.6 – 4.2 = 1.4
– 8,4x = 1,4 + 4,2 + 19,6
-8.4x = 25.2
x = -3
А)-2,8*(3х+7)-4,2=1,4 – 8.4x – 19.6 – 4.2 = 1.4 – 8,4x = 1,4 + 4,2 + 19,6 -8.4x = 25.2 x = -3