3[-x+2 (2x+1) ]=-1 what does x equal

Question

Mathematics

Emmanuel Hess

11 July, 16:50

3[-x+2 (2x+1) ]=-1 what does x equal

+1

Answers (1)

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Clancy · Answer 1

3[-x+2 (2x+1) ]=-1

Multiply the bracket by 2

(2) (2x) (2) (1)

4x+2

3 [-x+4x+2]=-1

3 [3x+2]=-1

Multiply the bracket by 3

(3) (3x) (3) (2) = -1

9x+6=-1

Move + 6 to the other side. Sign changes from + 6 to - 6

9x+6-6=-1-6

9x=-7

Divide by 9 for both sides.

9x/9=-7/9

x=-7/9

Answer: x=-7/9