Question

(7/8)(?)=21 please help!

Answer 1

7/8 x = 21
7x = 21×8
7x = 168
x = 24

Answer 2

Let's let the question mark be represented by $x$. We get the equation $\frac{7}{8}x=21$. We need to solve for $x$, and we can do that by first multiplying the reciprocal of $\frac{7}{8}$, which is $\frac{8}{7}$. When we multiply and simplify, we get that $x=24$. Therefore, the value of the question mark that makes the equation $\frac{7}{8}?=21$ true is $\boxed{24}$.