Answer:
a = 8
Step-by-step explanation:
a + 7 = 15
a + 7 - 7 = 15 - 7 Subtract 7 from both sides.
a = 8
An equation for those could be: x*y= t*y-10= 30 so x,y,t could be 6,5,8
Answer:
he swims 0.9 kilometers each day.
Step-by-step explanation:
Answer:
6h
Step-by-step explanation:
1 per 10 minutes
that means 6 per hour
Answer:
43 & 96
Step-by-step explanation:
x=one number
y=other number
x+y=139
x-y=53 x=y+53
substitute for x
y+53+y=139
reduce
2y+53-53=139-53
2y=86
2y/2=86/2
y=43
x=96
