How do you solve -4c-1.2=0.8?

2 Answers
Apr 27, 2017

c=-0.5

Explanation:

-4c-1.2=0.8

or

-4c=1.2+0.8

or

-4c=2

or

4c=-2

or

c=-2/4

or

c=-1/2

or

c=-0.5

Apr 27, 2017

c=-1/2=-0.5

Explanation:

-4c-1.2=0.8 original


  • Add 1.2 to both sides...
    -4c\cancel(-1.2)\cancel(\color(red)(+1.2))=0.8\color(red)(+1.2)
  • Simplify... -4c=0.8+1.2
    which becomes -4c=2.0 otherwise known as -4c=2
  • Divide both sides by -4...
    (\cancel(-4)c)/(\cancel(\color(red)(-4)))=2/\color(red)(-4) also written as c=-2/4
  • Simplifying the resulting fraction... c=-2/4\rarr-(1\cdot2)/(2\cdot2)
    you can remove a 2 from the numerator and denominator... so your result is

c=-1/2, or if you want it in decimal form, c=-0.5