Question

Two numbers are n and 2(n+3).

a The sum of the numbers is 90.
Write down an equation to show this.
b Solve the equation.
c Find the two numbers.​

Answer 1

Explanation:

N +2(n+3)=90

N+2n+6=90

3n=84

N=28 (1st number)

2(n+3)=2(28+3)=2*31=62 (2nd number)