Question

Please help me quickly. Thank you

Answer 1

Answer:

$x = \bf -7$

Step-by-step explanation:

$\frac{3}{4} (x + 21) = 10\frac{1}{2}$

• Divide both sides by $\frac{3}{4}$ :

⇒ $x + 21 = 10\frac{1}{2} \space\ \div \frac{3}{4}$

⇒  $x + 21 = 10\frac{1}{2} \space\ \times \frac{4}{3}$

⇒ $x + 21 = 14$

• Subtract 21 from both sides:

⇒ $x = 14 -21$

⇒  $\boxed {x = \bf -7}$

Answer 2

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

Hope it helps : )