a system of equations is shown below 7x + 3y= 22. 3x - 3y =18 what is the solution to the system of equations

Mathematics

2 answers:

Marianna [84]2 years ago

6 0

Answer:

(4, -2)

Step-by-step explanation:

7x+3y= 22

3x-3y= 18

Add them in vertical columns. 7x + 3x = 10x. The 3y and the -3y cancel each other out. 22+ 18 = 40.

You're left with 10x = 40. Solve for x by dividing both sides by 10

x = 4

Plug in 4 into any of the original equations and solve for y.

7(4) + 3y =22.

28 + 3y =22

Subtract 28 on both sides

You're let with 3y = -6. Solve for y by dividing both sides by 3

y= -2

Put it together in coordinate point form. (4, -2)

Tju [1.3M]2 years ago

5 0

4,-2

distribute and combine like terms

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Anon25 [30]

Step-by-step explanation:

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