Why/how does x=1 in the following equations: 12(1+x) or 3(x+1)?

Question

12(1+x)=12+2x and 3(x+1)=3x+3 - i dont get how if x always = 1, then how come these answers are as so?

Answer 1

They're just different ways to say it. like how many ways can you show that equal 24?

Answer 2

12(1+x)= 12+12x not 12+2x

Write these out correctly, then in place of every x put a 1

12(1+1)= 12(2)= 24
12+12(1)= 12+12= 24

3(1+1)= 3(2)=6
3(1)+3= 3+3=6

Make sense? Don't forget the order of operations PEMDAS

Answer 3

When you multiply a group by a number, you multiply each member fo the group by the number.

12(1 + x) becomes 12 + 12x
3(x + 1) becomes 3x + 3
x(x + y) becomes x^2 + xy
-5(x - 6) becomes 30 - 5x (did you follow the negative?)

Answer 4

by following the proper steps they must be true. just plug in 1 for x and see. but i think in the first one it should be: 12(1+x)=12 * 2x

Answer 5

I think the first equation was

12(1+x) = 12 + 12x

and the second equation remains as it is.