Question

x+y=4;
2x-y=5
solve by inversion and reduction method​

Answer 1

Answer:

3;4

Step-by-step explanation:

x+y=4

2x-y=5

sum

x+y+2x-y=4+5

3x=9

x=3

put x on equation 1

3+y=4

y=4-3

y=1