Question

solve each system of equations using sub
x+2y=2
y=2x-9

Answer 1

so x+2(2x-9)=2

Answer 2

x+4x-18=2

Answer 3

5x-18=2

Answer 4

x=4?

Answer 5

yes

Answer 6

so 2(5)-9 =1 y =1

Answer 7

no 2(4)-9=-1 y=-1

Answer 8

oh my mistake but some how in back of book it say awnser = 1, -1 and i dont get how they got 1

Answer 9

the book are not always right maybe they made a little mistake

Answer 10

ok thank you i was like wow im doing something wrong.