A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
-3x + 4y = -50
3x + 3y = -6

The variable that needs to be eliminated in these systems of equations are 3x

Step-by-step explanation:

-3x + 4y = -50

3x + 3y = -6

*solve from top to bottom, if that makes sense, so add 3x to -3x, 4y to 3y, and -50 to -6.*

0 + 7y = -56

7y = -56

*divide by 7 to get y alone*

y = -8

plug y into one of the original equations to get x

-3x + 4y = -50

-3x + 4(-8) = -50

-3x - 32 = -50

     +32    +32

-3x = -18

x = 6

58

Step-by-step explanation:

Triangles equal a total of 180°

Add the numbers you have which equal 122

Subtract 122 from 180 and you get 53

Number 10 is yes the right angle is in the corner

And number 11 is yes to

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