Robin’s number ------------ Y
Sydney’s number ------------ x
Y = X + 8.............. (1)
X + Y = 72 ............(2)
Substituting (1) in (2)
X + (X + 8) = 72 .............> ......2X = 64 => X = 32
Now in (1)
Y = (32) + 8 = 40
Robin is 40
Sydney is 32
Answer:
x = -5 y = 12
Step-by-step explanation:
-3x + 3y = 3
-5x + y = 13
y = 13 +5x
-3x + (13+5x) = 3
x = -5
-5(-5) + y = 13
y= 12
Step-by-step explanation:
31/2÷23/5
= 31/2×5/23
= 155/46
Answer:
-49/10 or -4 9/10
Step-by-step explanation:
-7/5 + -7/2 = -14/10 - 35/10 = -49/10 = -4 9/10
Answer:
1/100
Step-by-step explanation: