### Home > CC1MN > Chapter 10 > Lesson 10.1.1 > Problem10-7

10-7.

Solve each of the following equations. Show your work.

Undo the equation by performing the inverse operation to solve the equation for the given variables.

1. $5f=15$

Inverse operation:
$5f\div5=15\div5$

$f=15\div5$
$f=3$

1. $\frac{3}{4}w=6$

Multiply by the multiplicative inverse of three fourths.

$\frac{4}{3}$

1. $1.6y=9$

See the help for part (a).

1. $\frac{p}{3}=81$

$243$
$\quad \frac { p } { 3 } = 81$