to trzeba rozwiązać metodą podstawiania.
2x-4y=4
3x-2y=3
2x - 4y = 4
3x - 2y = 3
2x = 4 + 4y /:2
x = 2 + 2y
3(2 + 2y) - 2y = 3
6 + 6y - 2y = 3
4y = - 3 /:4
y = - 3/4
x = 2 + 2 * (-3/4)
x = 2 - 3/2
x = 1/2
2x-4y=4 /:2
x-2y=2 /+2y
x=2+2y
3(2+2y)-2y=3
6+6y-2y=3
4y=-3 /:4
y=-3/4
2x-4(-3/4) = 4
2x+3=4 /-3
2x= 1 /:2
x= 1/2
Odp.: x wynosi 1/2, a y -3/4.
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2x - 4y = 4
3x - 2y = 3
2x = 4 + 4y /:2
3x - 2y = 3
x = 2 + 2y
3(2 + 2y) - 2y = 3
x = 2 + 2y
6 + 6y - 2y = 3
x = 2 + 2y
4y = - 3 /:4
x = 2 + 2y
y = - 3/4
x = 2 + 2 * (-3/4)
y = - 3/4
x = 2 - 3/2
y = - 3/4
x = 1/2
y = - 3/4
2x-4y=4 /:2
3x-2y=3
x-2y=2 /+2y
3x-2y=3
x=2+2y
3x-2y=3
3(2+2y)-2y=3
6+6y-2y=3
4y=-3 /:4
y=-3/4
2x-4(-3/4) = 4
2x+3=4 /-3
2x= 1 /:2
x= 1/2
Odp.: x wynosi 1/2, a y -3/4.