Question

Plaese help !!! 5/7m=15

Answer 1

Here is the equation:

$\frac{5}{7} m = 15 \rightarrow \frac{5}{7} \times m = 15$

In this question, you are going to be multiplying. Switch it around. Remember that the sign changes!

$\frac{5}{7}\times m = 15 \rightarrow 15 \div \frac{5}{7} = m$

Divide to find m. When dividing, you have to multiply. You use: Keep, Change, Flip.

Keep 15, Change ÷ to ×, Flip 5/7 = 7/5. Your new equation is:

$15 \div \frac{5}{7} = \frac{15}{1} \times \frac{7}{5}$

Now multiply:

$\frac{15}{1} \times \frac{7}{5} = \frac{105}{5} = 21$

m is equal to 21; m = 21

Answer 2

$\dfrac{5}{7}m = 15$

Multiply both sides by 7/5.

$\dfrac{7}{5} \times \dfrac{5}{7}m = \dfrac{7}{5} \times 15$

$\dfrac{35}{35} m = \dfrac{7 \times 15}{5}$

$\dfrac{35}{35} m = \dfrac{7 \times 3 \times 5}{5}$

$m = \dfrac{7 \times 3}{1}$

$m = 21$