Answer:
x=10
Step-by-step explanation:
sinplify the algebraic terms first, 3x + -4x is equals to -x, so the equation can be rewritten as 6 + -x = -4
now add x to both sides of the equation(which still holds true since you are adding to both sides)
6 = -4 + x
x = 6 + 4 = 10
