Answer:
Step-by-step explanation:
The angle containing y and 63 are vertically opposite. They are equal.
y + 23 = 63 Subtract 23 from both sides
y +23-23 = 63 - 23
Answer y = 40
4 is the answer that you need for the equation
times the top numbers and then then bottom
2/5×2/3= 2x2/5x3 = 4/8 =1/2
-1/5×(-5/6)= -1 x -5 / 6 x 6 = 5/12
-1/12×2/5= -1 x 2 / 12 x 5 = -2/60 = - 1/30
4/7×7/8= 4 x 7 / 7 x 8 = 28/56 = 1/2