Pre-Algebra Examples

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

Step 1

Add $5.5 a$ and $3 a$ .

$8.5 a - 1 + 21 b$

Step 2

Move $- 1$ .

$8.5 a + 21 b - 1$

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