Pré-álgebra Exemplos

$5.5 a - 1 + 21 b + 3 a$

Etapa 1

Some $5.5 a$ e $3 a$ .

$8.5 a - 1 + 21 b$

Etapa 2

Mova $- 1$ .

$8.5 a + 21 b - 1$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$