seven times the sum of a number and 4 is 5

Answer 1

seven times the sum of a number and 4 is 5

Assuming the number is x

The mathematic equation from the statement above is

7 * ( x + 4) = 5

7x + 28 = 5

7x = - 23

x = - 23/7

Proof

7 * ( x + 4) = 5

7 * (-23/7 + 4)=5

7 * (-23/7 + 28/7) = 5

7 * (5/7)=5

5 = 5