Answer:
y=6
Step-by-step explanation:
2(7)=14.
subtract both sides by 14.
y=6
Answer:
x = (z + 3y) / 20
Step-by-step explanation:
20x - 3y = z
+3y +3y
-----------------------
20x = z + 3y
/20 /20
-----------------------
x = (z + 3y) / 20
Answer:
y=-2x-2.
Step-by-step explanation:
m= -2 for perpendicular line
m= y2-y1/x2-x1
-2 = y-4/x+3
y=-2x-2
Answer:
6/10
Step-by-step explanation:
all can be reduced to 2/5, except 6/10:
2/5
8/20=2/5 (divide out 4)
12/30=2/5 (divide out 6)
but not
6/10 = 3/5!
9/20. Add 20+24+36=80. Then it's 36/80. Divide both the bottom and the top by 4 and you get 9/20.