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3 years ago

Help please! the question is below!

Mathematics

2 answers:

gtnhenbr [62]3 years ago

6 0

Tips:Always follow in order
P- parenthesis
E-exponents
M-multiply
D-Divide
A-Add
S-subtract

1. 7 x 3 + (18 - 9) / 3
( 2 1 + 9 /3)
(21 + 3)
(24)
1. P=18-9= 9
2. M=7x3=21
3. D=9/3=3
4. A= 21+3= 24

2. (7 x 3) + (18 - 9 / 3)
(21) + (15)
(36)
1. P= 7x3=21 and 9/3=3,18-3= 15
2. D=21+15=36

3. 7 x (18 + 3) - 9 / 3
(7x 21 - 9 / 3)
(147 - 9 / 3)
(147-3)
(144)
1. P= 18+3 =21
2.M= 7 x 21 =147
3.D= 9/3= 3
4.S= 147-3=144
I hope this helped and was right, have a nice day.

tatiyna3 years ago

4 0

Answer:

1) 24

2) 36

3) 144

Step-by-step explanation:

Order of operations are the operations in which you must complete multiple-operation equations.

Here's an acronym to help you remember the order of operations.

PEMDAS:

Parenthesis

Exponentiation (exponents)

Multiplication/Division

Addition/Subtraction

----------------------------------------------------------------------------------------------------------------

7 × 3 + (18 - 9) ÷ 3

First, as stated by the order of operations, solve what is in parenthesis.

7 × 3 + (18 - 9) ÷ 3

7 × 3 + 9 ÷ 3

-------------------------------------------------------------------------------------------------------------

There are no exponents.

Further, we solve the multiplication problem(s).

7 × 3 + 9 ÷ 3

21 + 9 ÷ 3

-------------------------------------------------------------------------------------------------------------

Moreover, we solve the division problem(s).

21 + 9 ÷ 3

21 + 3

-------------------------------------------------------------------------------------------------------------

Lastly, we solve the remaining addition problem(s).

21 + 3

-------------------------------------------------------------------------------------------------------------

Now, we solve the remaining equations using order of operations (PEMDAS).

(7 × 3) + (18 - 9 ÷ 3)

21 + (18 - 9 ÷ 3)

21 + 18 - 3

39 - 3

-------------------------------------------------------------------------------------------------------------

7 × (3 + 18) - 9 ÷ 3

7 × 21 - 9 ÷ 3

147 - 9 ÷ 3

147 - 3

144

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