Pre-Algebra Examples

$a + 3 + 2 a = - 1 + 3 a + 4$

Step 1

Add $a$ and $2 a$ .

$3 a + 3 = - 1 + 3 a + 4$

Step 2

Add $- 1$ and $4$ .

$3 a + 3 = 3 a + 3$

Step 3

Move all terms containing $a$ to the left side of the equation.

Tap for more steps...

Step 3.1

Subtract $3 a$ from both sides of the equation.

$3 a + 3 - 3 a = 3$

Step 3.2

Combine the opposite terms in $3 a + 3 - 3 a$ .

Tap for more steps...

Step 3.2.1

Subtract $3 a$ from $3 a$ .

$0 + 3 = 3$

Step 3.2.2

Add $0$ and $3$ .

$3 = 3$

Step 4

Since $3 = 3$ , the equation will always be true for any value of $a$ .

All real numbers

Step 5

The result can be shown in multiple forms.

All real numbers

Interval Notation:

$(- \infty, \infty)$