Question

Решить уравнение 3(x+6)=5-x

Answer 1

3*(x+6) = 5-x;

3*x + 3*6 = 5-x;

3x + x = 5 - 3*6,

4x = 5 - 18,

4x = -13;

x = -13/4.

Проверка. 3*( (-13/4)+6) = (3/4)*( -13+24) = (3/4)*11.

5-(-13/4) = 5+(13/4) = (1/4)*(20+13) = 33/4.

Ответ. x=-13/4.

Answer 2

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