elchocolatedon
elchocolatedon elchocolatedon
  • 19-04-2018
  • Mathematics
contestada

A: 10x-4y=20
B: 8x+6y=14

Solve this system of equations using addition. Show all of your work.
Also list the property that you use in each step.

Respuesta :

MrEquation
MrEquation MrEquation
  • 28-04-2018


First, use the multiplication property of equality. Multiply the top equation by 3 and the bottom equation by 2.

30x - 12y = 60
16x + 12y = 28

Now, use the addition property of equality. Add the the two equations.

46x = 88  Use the division property of equality. Divide both sides by 46.

x is about 1.91

If you sub that back in for x, you can solve and find the y is about -0.217.

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