Problema Solution
when 3 times the sum of 4 and an unknown number is subtracted from 10 times the unknown number, the result is equal to 5 times the sum of 9 and twice the unknown number. Find the number
Answer provided by our tutors
given equ = 10x- 3* ( 4 +x) =5(9+2x)
10x -12-3x = 45+10x
-12-45 = 3x
-57 = 3x
x = - 19