i'm thinking of two numbers, x and y. The sum of 4x and 1 is y. The sum of y and twice x is 13. Find x and y.

Answer 1

y = 4 x + 1

y + 2 x = 13
so

4 x + 1 + 2 x = 13

6 x = 12

x = 2

then y = 4(2) + 1 = 9