4(0.2x-5)=12 what is x
Mathematics · Middle School · Tue Nov 03 2020
Answered on
In order to solve this equation we follow this route:
Lets try and multiply the bracket with the number 4. We will have:
4(0.2x-5)=
4*0.2x - 4*5=
0.8x-20
The result is equal with 12.
0.8x-20=12
Lets put the variables on one side and the numbers on the other side. Every variable or number that will change sides, will have their sign changed from a + into a - and vice versa.
0.8x=20+12
0.8x=32
Divide both sides with 0.8.
0.8x/0.8 = 32/0.8
x=40