How do you solve 3.5(x-8/4) = 2.8?

2 Answers
Feb 19, 2016

x=14/5

Explanation:

Simplify 8/4 to 2.

3.5(x-2)=2.8

Divide both sides by 3.5

x-2=0.8

Add 2 to both sides.

x=2.8=14/5

Feb 19, 2016

x=2 4/5

Explanation:

First do the easy bit and replace 8/4 with 2

color(white)("XXX")3.5(x-2)=2.8

Divide both sides by 3.5
(this is easier if you notice 3.5=7xx0.5 and 2.8=7xx0.4)
color(white)("XXX")(x-2)= 4/5

Add 2 to both sides:
color(white)("XXX")x= 2 4/5 (or 14/5)