Simultaneous equations help please!

7x-3y=27
y= 4 - 2x

can some please help me with this

7x-3y=27
y= 4 - 2x

Substitute the second equation into the first equation:

7x - 3(4 - 2x) = 27
7x - 12 + 6x = 27
13x = 39
x = 3

y = 4 - 2x
y = 4 - 2(3)
y = -2

Thus, the solution is (3,-2).