Answer:
x = 10
Step-by-step explanation:
1) Subtract x from both sides.
4x − x = 30
2) Simplify 4−x to 3x
3x = 30
3) Divide both sides by 3
x = [tex]\frac{30}{3}[/tex]
4) Simplify [tex]\frac{30}{3}[/tex] to 10