Y+(3x+16)°=180°
x°+y°+72°=180°
what are x and y?

x = 8 and y = 100

Step-by-step explanation:

y + 3x - 16 + 72 = 180

y + 3x + 56 = 180

x + y + 72 = 180

Simultaneous Equation

y + 3x + 56 = 180

y + x + 72 = 180

Take y + x + 72 = 180 from y + 3x + 56 = 180

y + 3x + 57 = 180

-

y + x + 72 = 180

=

2x - 16 = 0

Add the 16 onto both sides to have x on only one side.

2 x = 16

Divide by 2 to find x

x = 8

Substitute back into triangle

72 + x + y = 180

72 + 8 + y = 180

180 - 80 = 100

y = 100

Double check.

72 + y + (3x - 16) = 180 (A straight line is 180 degrees)

72 + 100 + (24 - 16) = 180

72 + 100 + 8 = 180

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^