Answer:
x=-20
Step-by-step explanation:
3x-13=4x+7
3x-13+13 = 4x+7+13
3x=4x+20
subtract from both sides
3x-4x = 4x+20-4x
combine like turms
-x=20
divide both sides of the equation by the same term
-x =20
-x/-1 = 20/-1
I hope that this helped