Question 181355
 y=2x+3 y=4x-1
;
Substitute 4x - 1 for y in the 1st equation
4x - 1 = 2x + 3
4x - 2x = 3 + 1
2x = 4
x = {{{4/2}}}
x = 2
:
Find y using the 1st equation
 y = 2x + 3
 y = 2(2) + 3
y = 7
;
It has one solution: 2,7
:
Check solutions in the 2nd equation
 y = 4x - 1
 7 = 4(2) -1