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3x+y=5
2x-2y=-2
elimination

User Vijay DJ
by
8.7k points

2 Answers

2 votes
Multiply the first equation by 2 to get 6x+2y=10. Add the two equations to eliminate y.
6x+2y=10
2x-2y=-2
—————
8x=8
x=1
Substitute x=1 into one equation to get y value
3(1)+y=5
y=2
Answer: x=1, y=2
User Danivovich
by
7.5k points
3 votes

SOLUTION

{x,y} = {1,2}

Step-by-step explanation

y = -3x + 5

// Plug 2 in for variable y in equation

2x - 2•(-3x+5) = -2

8x = 8

// Solve equation for the variable x

8x = 8

x = 1

By now we know this much :

x = 1

y = -3x+5

// Use the x value to solve for y

y = -3(1)+5 = 2

User Guyaloni
by
7.8k points

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