How do you simplify 3{4x2[3x4(x1)2]3}+7?

1 Answer
Aug 11, 2017

=18x+28

Explanation:

There are 2 terms. The second term of 7 will be added in the last step.

Start by multiplying the innermost bracket and work outwards.

3{4x2[3x4(x1)2]3}+7

=3{4x2[3x4x+42]3}+7 simplify

=3{4x2[x+2]3}+7 ×2

=3{4x+2x43}+7 simplify

=3{6x7}+7 ×3

=18x+21+7

=18x+28