–8(–7r – 7) + 8 =-272
Mathematics · Middle School · Mon Jan 18 2021
Answered on
Given the numerical equation:
–8(–7r – 7) + 8 =-272
Solve for r.
Solution:
In order to solve for r, we simply need to distribute -8 to each value inside the parenthesis, and then combine like terms.
–8(–7r – 7) + 8 =-272
56r +56 + 8 = -272
56y + 64 = -272
Transpose 64 to the other side of the equation, hence it must be taken to note that in transposing numbers, the sign changes.
56y = -272 - 64
56y = -336
Divide both sides by 56, in order to cancel out 56y, leaving behind y.
56y/56 = -336/56
y = -6
Final answer:
y = -6