Answer:
negative 7
Step-by-step explanation
x=-7
Step-by-step explanation:
3/4(x+21)=10 1/2
3/4x+15 3/4 = 10 1/2
(I put them in improper form)
3/4x+63/4 = 42/4
3/4x=-5.25
divide -5.25 by 3/4= x=-7
