A-Distribute the negative to all terms in the second set of parenthesis B-Change the sign of every number

C-Set up the box method to multiply all terms together

D-Combine like terms

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

Three coins are flipped. what is the probability that there will be at least two tails?

How to solve a simultaneous equation involved with fractions?