Question

Please help me quickly.
Thank you

Answer 1

3/4(x+21) = 10.5
0.75x+15.75 = 10.5
0.75x = -5.25
x = -7

Hope it helps : )

Answer 2

`x = \bf -7`

Explanation:

`(3)/(4) (x + 21) = 10(1)/(2)`

• Divide both sides by
`(3)/(4)` :

⇒
`x + 21 = 10(1)/(2) \space\ / (3)/(4)`

⇒
`x + 21 = 10(1)/(2) \space\ * (4)/(3)`

⇒
`x + 21 = 14`

• Subtract 21 from both sides:

⇒
`x = 14 -21`

⇒
`\boxed {x = \bf -7}`