Question

metodo determinacion 7x-4y=5 9x+8y=13 ayudad porfavorr

Answer 1

7x-4y=5
9x+8y=13

8[7x-4y=5] 56x-32y=40
4[9x+8y=13]36x+32y=52
92x=92
x=92÷92
x=1
9x+8y=13
9(1)+8y=13
9+8y=13
8y=13-9
8y=4
y=4÷8
y=0.5

x=1
y=0.5