what is 6x − 7[x − (2 − x)]

Question

taking online classes, need help please

Answer 1

6X − 7[X − (2 − X)]

First multiply out the square brackets( X=the letter 'x', and x=multiplication):

6X − 7[X − (2 − X)] = 6X - 7X - (-7)x(2 - X)

(be careful here with the negative signs, it's easy to lose a sign or to get confused, so it's best to write it out with as many steps as you want)

= -X + 7(2 - X)

Then multiply out these brackets:

= -X + 7x2 + 7x(-X)

= -X + 14 -7X

= -8X +14