-20 = -4x - 6x

what is x?

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

7x+8y=-18, 4x-9y=-3 solve the system of equations

What statement is true? 2x^2-9x+2=-1