SOLUTION: Hi, Im having trouble with my homework solving for x. I think i almost have it but im not sure. Heres a problem im stumped on. Please help me step by step. 5/7(x+21)= 30 Thanks

Algebra ->  Equations -> SOLUTION: Hi, Im having trouble with my homework solving for x. I think i almost have it but im not sure. Heres a problem im stumped on. Please help me step by step. 5/7(x+21)= 30 Thanks      Log On


   

Question 380597: Hi, Im having trouble with my homework solving for x. I think i almost have it but im not sure. Heres a problem im stumped on. Please help me step by step.
5/7(x+21)= 30
Thanks, Ricky
Found 2 solutions by ewatrrr, rfer:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

solving

5/7(x+21)= 30  mulitplying each side of the equation by 7 so as all denominators = 1

 5(x+21) = 30*7

 5x + 105 = 210

     5x = 105

      x = 21



CHECKING our Answer

5/7(42) = 30

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
5/7x+5/7*21=30
5/7x+105/7=30
5/7x+15=30
subtract 15
5/7x=15
divide by 5/7
x=15/(5/7)
x=15*(7/5)
x=105/5
x=21