Rachel F. answered 04/01/19
Tutor
New to Wyzant
Certified Elem/Middle School Teacher (Mathematics & Science)
4(3× +1) + 5×=21
Distribute the 4
4(3x) + 4(1) + 5x = 21
12x + 4 + 5x = 21
Combine like terms
17x + 4 = 21
Solve for x
17x = 17
x = 1