Question

5x - 2y = -1
x + 4y = 35

solve using the substitution method & then using the addition method

Answer 1

x=3, y=8

Answer 2

substitution method:

5x-2y=-1
x=35-4y (subtracted 4y)

(substitute second equation into first)

5(35-4y)-2y=-1
175-20y-2y=-1 (multiplied the 5*(35-4y)

-20y-2y=-176 (subtracted 175)
-22y=-176 (-2y+-20y)
y=8 (divided by 22)


now just put into second equation

x=35-4(8)
x=35-32
x=3

Answer 3

addition method:

5x-2y=-1
x+ 4y=35

10x-4y=-2 (multiplied first equation by 2)
x+4y=35

11x+0y=33 (added 2 equations)
11x=33
x=3

x+4y=35
3+4y=35 (substitute x=3)
4y=32 (subtract 3)
y=8

Answer 4

ok, i'm looking it all over to seer if i understand it! thank u!