Answer:
2(x-9) = 2
Step-by-step explanation:
Difference indicates subtraction:
The difference of a number and
9
is
(
x
−
9
)
Twice the difference means
2
(
x
−
9
)
We know that the answer to this is
2
, so as an equation:
2
(
x
−
9
)
=
2
If you solve it we would have:
x
−
9
=
1
←
÷
2
x
=
1
+
9
x
=
10
The difference between
10
and
9
is
1
and twice
1
is
2
.
The number is correct.
Note that written as:
The difference of twice a number and
9
would have a different expression. This would be
2
x
−
9
Answer:
x=6
Step-by-step explanation:
9(10)=15(×)
90=15×
90÷15=6
Answer:
1/2
Step-by-step explanation:
.5=1/2
The rabbit weighs 2 kg, so he needs to feed it 50 grams a day. There are 1000 grams in a kilogram. So 1000/50 = 20. So 1 kg of food will last 20 days, but remember that he bought 3kg of rabbit food, so 20 x 3 = 60. So the food will last 60 days.