Trigonometry Examples

$8 x + 2 x - 7 = 10 x - 2 - 5$

Step 1

Add $8 x$ and $2 x$ .

$10 x - 7 = 10 x - 2 - 5$

Step 2

Subtract $5$ from $- 2$ .

$10 x - 7 = 10 x - 7$

Step 3

Since the two sides have been shown to be equivalent, the equation is an identity.

$8 x + 2 x - 7 = 10 x - 2 - 5$ is an identity.