2n+5=20
Subtract 5 from 5 and 20
2n=15
Divide 15 and 2 by 2
n=7.5
:P
n ≈ 7.5
2n + 5 ≈ 20
5 - 20 = 2n ≈ 15
Subtract 5 from 5 and 20 .
2n = 15
15 ÷ 2 ≈ 7.5
Echy~
