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:

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

$c = 18$

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