Question

Solve the equation.

$-3r=87$

Short answer

Solution of given equation is $r=-29$.

Step-by-step solution

Step-1- Using Division/Multiplication property of equality

$-3r=87$

Dividing with $-3$on both sides gives,

$\begin{array}{c}\frac{-3r}{-3}=\frac{87}{-3}\\ r=\frac{87}{-3}\end{array}$

Step-2- Solving for value of r

Simplify the expression on right side.

$\begin{array}{c}r=\frac{87}{-3}\\ r=-29\end{array}$

Step-3-Conclusion

Therefore, the value of $r$ is -29.