Algebra Examples

$y + - 10 = - 3$

Step 1

Replace all occurrences of

$+$

$-$ with a single

$-$ . A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because

$1 \cdot - 1 = - 1$

$y - 10 = - 3$

Step 2

Add

$10$ to both sides of the equation.

$y = - 3 + 10$

Step 3

Add

$- 3$ and

$10$ .

$y = 7$