Question

One number is 5 more than another number.three times the first plus twice the second number is 30.find the numbers

Answer 1

X=first number
y=second number
x=y+5
3x+2y=30
3(y+5)+2y=30
3y+15+2y=30
5y+15=30
5y=30-15
5y=15
y=3
x=3+5
x=8