Question

-3r-8(8r+8)=-9(-4+9r)​

Answer 1

r= 7.14 (rounded to 2 decimal places)

Explanation:

We have to solve this equation for the value of r. We will use distributive property and basic algebra to solve this.

Distributive property is a(b+c) = ab + ac

Now, the steps of solving are shown below:

`-3r-8(8r+8)=-9(-4+9r)\\-3r -64r-64=36-81r\\-67r-64=36-81r\\-67r+81r=36+64\\14r=100\\r=(100)/(14)\\r=7.14`

Hence, value of r is 7.14 (rounded to 2 decimal places)