I’m stuck on the 75= -1/8x would you figure out what x is after this step?

Measures of the angle of r, 31 s (x+4) t (3x+9)

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Can someone me do math because i am having a breakdown rn because i don’t get it