Question

Solve for x and y

y=1/3x - 1
x-y=-1

Answer 1

y = ( 1 / 3 ) x - 1


x - [ ( 1 / 3 ) x - 1 ] = - 1

x - ( 1 / 3 ) x + 1 = - 1

( 3 / 3 ) x - ( 1 / 3 ) x = - 1 - 1

( 2 / 3 ) x = - 2 Multiply both sides with 3

2 x = - 2 * 3

2 x = - 6 Divide both sides with 2

x = - 6 / 2

x = - 3


x - y = - 1

- 3 - y = - 1

- 3 + 1 = y

y = - 2