Question

If twice a number plus 5 is 13 then
number is​

Answer 1

Answer:

Name the unknown number "x".

Write the equation to match the description:

(2*x + 3 ) / (x + 4) = 5/3

cross-multiply to clear the fractions:

3*(2*x + 3 ) = 5(x +4)

simplify:

6*x + 9 = 5x + 20

x = 11 (plug this into the original equation to verify)