Question

if 3 times a number increased by 4 is 49 the number is

Answer 1

let the no. be 'x'
x is increased by 4 three times
3(x+4)=3x+12
therefore, 3x+12=49-----(according to condition)
3x=49-12=37
x=37/3

Answer 2

let no. = x
3x+4=49

$3x = 49 - 4 \\ 3x = 45 \\ x = 45 \div 3 \\ x = 15$
Hence no. is 15