Question

A number is 7 more than 5 times another number and their difference is 78 Find the numbers

Answer 1

n = 95.75

m = 17.75

Explanation:

n = one number

m = another number

System of Equations:

n = 7+5m

n - m = 78

Substitution Method:

7+5m - m = 78

4m + 7 = 78

4m = 71

m = 17.75

n - 17.75 = 78

n = 95.75