A number is multiplied by 3
initially. The result obtained
is then added to 20. This
sum is then multiplied by 10.
If the initial number is 15,
find the final value after the
three mentioned arithmetic
operations.
Answers
Answer:
The Basic Arithmetic Properties
Commutative Property
The commutative property describes equations in which the order of the numbers involved does not affect the result. Addition and multiplication are commutative operations:
2
+
3
=
3
+
2
=
5
5
⋅
2
=
2
⋅
5
=
10
Subtraction and division, however, are not commutative.
Associative Property
The associative property describes equations in which the grouping of the numbers involved does not affect the result. As with the commutative property, addition and multiplication are associative operations:
(
2
+
3
)
+
6
=
2
+
(
3
+
6
)
=
11
(
4
⋅
1
)
⋅
2
=
4
⋅
(
1
⋅
2
)
=
8
Once again, subtraction and division are not associative.
Distributive Property
The distributive property can be used when the sum of two quantities is then multiplied by a third quantity.
(
2
+
4
)
⋅
3
=
2
⋅
3
+
4
⋅
3
=
18
hope it's helpful for you make me brainlist answer
Answer:
6.16 or 37/6
Step-by-step explanation:
let the no.be x.
Then,
3 × x = 3x
=> 3x + 20
=> 10(3x + 20)
=>30x + 200
=> 30x + 200 = 15
=> 30x = 15 - 200
=> 30x = -185
=> x= -185/30
=> x= 37/6
=> x=6.16