Answer: y is -1
x is 3
Step-by-step explanation:
make x the subject in equation 2
x = - 2y + 1
substitute x = - 2y + 1 into eegation 1
y = 2x - 7
y = 2 ( - 2y + 1 ) - 7
y = - 4y + 2 - 7
4y + y = - 5
5y = - 5
y = - 1
substitute y = - 1 into equation 2
x + 2y = 1
x + 2 ( -1 ) = 1
x = 2 + 1
x = 3
therefore x = 3
y = - 1
