Question

Can any one help and fast please

Answer 1

we conclude that in the second step, 3 should have been subtracted from the right side as well on the left side.

Explanation:

Given the expression

`4 < -2x + 3 < 9`

SECOND STEP

subtract 3 from the right-hand side as well as on the left-hand side

`4-3 <-2x+3-3<9-3`

SOLVING THE REMAINING COMPLETE COMPRESSION

`1 < -2x < 6`

Divide all parts by -2

• Please note that multiply or divide an inequality by a negative number flips the inequality sign.

so the expression becomes

`(1)/(-2)\:<\:(-2x)/(-2)\:<\:(6)/(-2)`

`(1)/(-2)\:>x\:<\:-3`

Hence, from the explanation, we conclude that in the second step, 3 should have been subtracted from the right side as well on the left side.