5x - 2y = -1 x + 4y = 35 solve using the substitution method

Question

anonymous · Answer

also can you solve using the addition method?

anonymous · Answer

5x-2y=-x+4y
6x-6y=0
x=y

angela210793 · Answer

5x - 2y = -1
 x + 4y = 35 ---> x=35-4y---> 5(35-4y)-2y=-1
                                                       175-22y=-1
                                                                  -22y=-176
                                                                          y=8

x=35-4*8=35-32=4

angela210793 · Answer

5x - 2y = -1 (*-2)  10x-4y=-2  add both sides  11x=33-->x=3
x + 4y = 35             x + 4y = 35

4y=35-3
y=8

angela210793 · Answer

Solution is (3;8)

anonymous · Answer

so the first one is the substitution and the y=8 is the addition one?

angela210793 · Answer

1st post is substitution and 2nd post is addition

anonymous · Answer

alright, i'm looking them over to see if i understand- thank YOU!

angela210793 · Answer

tell me if u don't understand anything :D