Question

Find the solution to the system by substitution

y=2x-1
x-2y=-1

Answer 1

x = 1

y = 1

Explanation:

Substitute y with 2x-1:

x - 2(2x-1) = -1

x - 4x + 2 = -1

-3x + 2 = -1

-3x = -1 - 2

-3x = -3

x = 1

Substitute x with 1

y = 2(1) - 1

y = 2 - 1

y = 1