Question

Решить уравнение 26.9-0.8(3х+40)=х

Answer 1

$26.9 - 0.8(3x + 40) = x \\ 26.9 - 2.4x - 32 = x \\ - 2.4x - x = - 26.9 + 32 \\ - 3.4x = 5.1 \\x = 5.1 \div ( - 3.4) \\ x = - 1.5$
Ответ : х = -1,5.

Удачи))))

Answer 2

26.9-0.8(3х+40)=х,

26.9-0.8×3х-0,8×40-х=0,

26.9-2.4х-32-х=0,

-5.1-3.4х=0,

3.4х=-5.1,

х=-5,1/3,4,

х=-1.5.

Ответ: х=-1.5.