solve 5c-9=8-2c ?

5c - 9 = 8 - 2c
5c + 2c = 8 + 9
7c = 17
c = 17/7

5c-9=8-2c
5c+2c-9=8-2c+2c (add 2c to both sides)
7c-9=8
7c-9+9=8+9 (add 9 to both sides)
7c=17
c=17/7 (simplify the equation)
c=2.42857143

7 c = 17
c = 17 / 7

you must combine like terms
in doing so your problem should looklike this
5c-9=8-2c
+9 +9
5c=17-2c
+2c +2c
7c=17 then divide each side by 7
then c=2.4285714

Rearrange the terms so the c's are on the left hand side:
5c + 2c = 8 + 9
7c = 17
c = 17/7

5c-9=8-2c
or
5c+2c = 8+9
7c = 17

c = 17/7 ----> ans

c=17/7

c equals 17 over 7
or 2 and 3 over 7

c = 17/7.

bring the c's to one side giving u 7c. on the other side, should be 17 bc 9+8=17. 17 divided by 7 gives u c

5c - 9 = 8 - 2c
5c + 2c = 8 + 9
7c = 17
c = 17/7
c = 2.43(approx.)