Answer:
2x 2y -1
Step-by-step explanation:
x plus 1x equals 2x and 2y equals 2 y and 1 plus 1 minus 3
No
4(x+3)=2(x+4+x+1)
4x+12=4x+10
12=10
No sol
Answer:
x = 10°, y = 20°
Step-by-step explanation:
Fill in the missing angle measures, 20° and 70°.
7x = 180 - 90 - 20
7x = 70
x = 10
2y = 180 - 7x - 5x - 20 = 40
y = 20