Solve for x 87+123+75+x=360

$87 + 123 + 75 + x = 360$

Simplify $87 + 123 + 75 + x$ .

Add $87$ and $123$ .

$210 + 75 + x = 360$

Add $210$ and $75$ .

$285 + x = 360$

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

Subtract $285$ from both sides of the equation.

$x = 360 - 285$

Subtract $285$ from $360$ .

$x = 75$