7 times the sum of 4 times a number and 6 is 18

Answer 1

7(4x+6) = 18

28x +42 = 18

28x = 18-42 = -24

x = -24/28 = -6/7

x =-6/7

-6/7 is the number

check the answer, plug it into the original equation

7(4x+6) = 18

7(4(-6/7) +6) = 18

7(-24/7 +6) =18

7(-24/7+42/7) = 18

7(18/7) = 18

18=18