Question

If 12 subtracted from seven times a number is equal to 5 times the sum of the number and 2,find the number

Answer 1

let x be a number.
A/q,
7x - 12 = 5 (x+2)
7x - 12 = 5x + 10
7x -5x = 10 + 12
2x = 22
x=22/2
x =11