How do you solve #1.2c = 5.4+ 0.9c#?

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Answer 1 · 2017-09-21T18:28:17

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

First let's collect terms:

#1.2c color(red)(-0.9c) = 0.3#

this gives us

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

Now divide both sides by 0.3

#c= color(green)(18)#

Answer 2 · 2017-09-21T18:30:10

#c = 18#

#1.2c = 5.4 + 0.9c#

Subtract 0.9c from both sides:

#1.2c- 0.9c = 5.4#

#0.3c = 5.4#

Divide both sides by 0.3:

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

#c = 18#