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c) [tex]15 - 4 + 7 \times 18 \div 9[/tex]

Sagot :

GinnyAnsweridn
Let's solve the expression step by step:

[tex]\[ 15 - 4 + 7 \times 18 \div 9 \][/tex]

1. Order of Operations (PEMDAS/BODMAS) Overview:
- Parentheses/Brackets
- Exponents/Orders (i.e. powers and roots, etc.)
- Multiplication and Division (from left to right)
- Addition and Subtraction (from left to right)

2. Handle the multiplication and division first:

[tex]\[ 7 \times 18 \div 9 \][/tex]

- First, perform the multiplication:

[tex]\[ 7 \times 18 = 126 \][/tex]

- Next, perform the division:

[tex]\[ 126 \div 9 = 14.0 \][/tex]

3. Now substitute this result back into the expression:

[tex]\[ 15 - 4 + 14.0 \][/tex]

4. Perform the addition and subtraction from left to right:

- First, subtract 4 from 15:

[tex]\[ 15 - 4 = 11 \][/tex]

- Then add 14.0 to 11:

[tex]\[ 11 + 14.0 = 25.0 \][/tex]

So, the final answer is:

[tex]\[ 25.0 \][/tex]
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