Question

Please help me

if you can't read it it says
-138=-6(6b-7)​

Answer 1

`b\ge \:5`

Explanation:

`-138\ge \:-6\left(6b-7\right)\\\\`

Switch sides

`-6\left(6b-7\right)\le \:-138\\`

Multiply both sides by -1

`\left(-6\left(6b-7\right)\right)\left(-1\right)\ge \left(-138\right)\left(-1\right)`

Simplify

`6\left(6b-7\right)\ge \:138`

Divide both sides by 6

`(6\left(6b-7\right))/(6)\ge (138)/(6)`

Simplify

`6b-7\ge \:23`

Add 7 to both sides

`6b-7+7\ge \:23+7`

Simplify

`6b\ge \:30`

Divide both sides by 6

`(6b)/(6)\ge (30)/(6)`

Simplify

`b\ge \:5`