How do you solve 1.2c = 5.4+ 0.9c1.2c=5.4+0.9c?

2 Answers
Sep 21, 2017

color(green)(c = 18)c=18.

Explanation:

First let's collect terms:

1.2c color(red)(-0.9c) = 0.31.2c0.9c=0.3

this gives us

color(green)(0.3c) = 5.40.3c=5.4

Now divide both sides by 0.3

c= color(green)(18)c=18

Sep 21, 2017

c = 18c=18

Explanation:

1.2c = 5.4 + 0.9c1.2c=5.4+0.9c

Subtract 0.9c from both sides:

1.2c- 0.9c = 5.41.2c0.9c=5.4

0.3c = 5.40.3c=5.4

Divide both sides by 0.3:

(cancel(0.3)c)/cancel(0.3) = 5.4/0.3

c = 18