Five times a number plus $7$ equals $42$. The number is

Five times a number plus $7$ equals $42$. The number is
  1. $7$
  2. $5$
  3. $8$
  4. $10$

Solution

$5x + 7 = 42 \Rightarrow 5x = 35 \Rightarrow x = 7$.

Asked in: NSO

Practice more LINEAR EQUATIONS IN ONE VARIABLE questions on Aicharya