Pleaseee help me quickly

I think it is already written the way you want. if not please explain more :)

we use triangle sum thereom for this answer. which states that x+y+z=180

so 79+37+y=180

solve, and you get 64 degrees.

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substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4