Solve for x (2x+1 degree )+(x-10 degrees )=90 degrees

$(2 x + 1 °) + (x - 10 °) = 90 °$

Step 1

Simplify $2 x + 1 ° + x - 10 °$ .

Add $2 x$ and $x$ .

$3 x + 1 ° - 10 ° = 90 °$

Subtract $10 °$ from $1 °$ .

$3 x - 9 = 90 °$

Step 2

Move all terms not containing $x$ to the right side of the equation.

Add $9$ to both sides of the equation.

$3 x = 90 ° + 9$

Add $90 °$ and $9$ .

$3 x = 99$

Step 3

Divide each term in $3 x = 99$ by $3$ and simplify.

Divide each term in $3 x = 99$ by $3$ .

$\frac{3 x}{3} = \frac{99}{3}$

Simplify the left side.

Cancel the common factor of $3$ .

Cancel the common factor.

$\frac{3 x}{3} = \frac{99}{3}$

Divide $x$ by $1$ .

$x = \frac{99}{3}$

Simplify the right side.

Divide $99$ by $3$ .

$x = 33$