Solve this question to get 11 points! 6(x + 3) = 21 x=?
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Lets try and remove the brackets by multiplying 6 with the bracket. We will have:
6(x+3)=
=6*x+6*3=
=6x+18
Now the equation is:
6x+18=21
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.
6x=21-18
6x=3
Divide both sides with 6.
6x/6 = 3/6
x=½