2x - 5x + 4 = 0
- 3x = - 4
x = 4/3
I wrote my decision on a piece of paper.
Minus 36 from each one you can do it on a calculator:)
Idk what linear combination is but you can solve this way:
3x+y=4
-2x-y=-5
x=-1
3(-1)+y=4
-3+y=4
y=7
So x=-1 and y=7
U think it’s 40 cuz 8 x40 equal 320 ;-; if it’s wrong my name will come to use