Solve for X the mini box in the corner is 90 degree angle

X = 12

A triangle has a sum of interior angles equaling 180 degrees. Since the triangle has a right angle, 90 degrees, subtract 90 from 180.

There are 90 degrees left in the triangle. An angle of 35 degrees is given. 90 - 35 = 55. Thus, the final angle must equal 55 degrees.

Solve for x
3x + 19 = 55
- Subtract 19 from each side
3x = 36
- Divide by 3 to isolate x
x = 12

y=-2x+5

6x+3y=15

-6x -6x

3y=15-6x

divide the whole thing by 3

y=5-2x

so then the two equations are now

y=-2x+15 and y=5-2x

-2x+15=5-2x

+2x +2x

15=5 - there is no solution for number 22

I don't know really know how to do 23

24 is a negative relationship