Question

Four ninths of a number c increased by 4 is
18 less than one eighth times another number d. Solve for c.

A. c=9/32 d +31 1/2
B. c=4/72 d + 4/72
C. c=9/32 d - 49 1/2
D. c=4/72 d - 31 1/2

I would like to see HOW the answer was reached, not just the answer.

Answer 1

4/9 c +4 = 1/8 d -18
(4/9)c = (1/8)d -22
c = (9/32)d -(99/2)
c= (9/32)d - 49 1/2

The answer is choice C.

Answer 2

Sorry, I'm still a bit confused. Can you explain what you did in steps 2-3?

Answer 3

When you move +4 to the right side of the equation, it is -4. So, -4-18= -22
In step 3, it is
c=(9/4)*{(1/8)d -22}
Multiply and you get the expression in step c

Answer 4

Oh! Now I see what happened!
Thank you soo much! :)