Question

2x+2y=6 -3x+5y=-33 Linear System by using Substitution

Answer 1

x = 6

y = -3

Answer 2

can u plz help me with the steps I am kinda a visual learner.

Answer 3

Multiply first equation by 3 and second equation by 2

Answer 4

When you add, you would have cancel out the x, only leaving the y

Answer 5

That's should get you started

Answer 6

time (3) 2x+2y=6 6x +6y = 18
time (2) -3x+5y=-33 -6x +10y = -66 Add
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16y = -48
y = -48/16
y= -3

Answer 7

substitution y=-3 find x
2x+2y=6
2x+2(-3)=6
2x-6=6
2x=6+6
x=6

Answer 8

so how did you know to mutiply by the 3&the 2

Answer 9

1) Solve either equation in terms of either x or y.
I'll solve 2x+2y=6 in terms of x.

You get:
x = -y + 3

2) Substitute this back into the other equation
-3(-y+3)+5y=-33

3) Solve for y
y = -3

4) Since y = -3 and we know that x = -y + 3....
x = 6

Answer 10

nancy can u plz explain to me how you knew to multiply by the 3 & 2=)