Answer :
you can drop the parentheses because you cant use them.
So we combine like terms first
1.8x + 2.1x = 3.9x
3.9x + 15.5 -12.2
3.9x + 3.3
hope i helped :)
So we combine like terms first
1.8x + 2.1x = 3.9x
3.9x + 15.5 -12.2
3.9x + 3.3
hope i helped :)