What is the answer to -21= 1/2 c-11 ?

The answer to -21= 1/2 c-11 is c=-20

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-21= 1/2 c-11

- 21 = \frac{1}{2} c - 11

c = - 20

Solution steps

- 21 = \frac{1}{2} c - 11

Switch sides

\frac{1}{2} c - 11 = - 21

Move

11

to the right side

\frac{1}{2} c = - 10

Multiply both sides by

2

c = - 20

\frac{c}{0.2} + 0.9 = 3.9

(2 x - 7) + (4 x + 3) = 112

\frac{x}{3} + 7 = - 5

10 + 5 x = 2 x - 11

3 x - 2 - x = 7 - x