# Refer to Expression 1 and Expression 2. Expression 1 6⋅7−32⋅9+43 6⋅7−32⋅9+43

Question

Refer to Expression 1 and Expression 2.

Expression 1

6⋅7−32⋅9+43
6⋅7−32⋅9+43

Expression 2

5+4⋅2+6−2⋅2−1
+⋅+−⋅−

What is the value of Expression 1?

Insert parentheses in Expression 2 so that it has a value of 19. Then show why your expression has a value of 19.

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3 weeks 2023-01-09T01:02:13+00:00 2 Answers 0 views 0

Use the order of operations PEMDAS:
• Parentheses
• Exponents
• Multiplication and Division (from left to right)
• Addition and Subtraction (from left to right)
Expression 1
6 ⋅ 7 – 32 ⋅ 9 + 43
= 42 – 288 + 43
= -246 + 43
= -203
Expression 2
Insert parentheses around 5 + 4:
(5 + 4) · 2 + 6 – 2 ⋅ 2 – 1
= 9 · 2 + 6 – 2 ⋅ 2 – 1
= 18 + 6 – 4 – 1
= 24 – 4 – 1
= 20 – 1
= 19

Expression 1
6 ⋅ 7 – 32 ⋅ 9 + 43
= 42 – 288 + 43
= -246 + 43
= -203
Expression 2
Insert parentheses around 5 + 4:
(5 + 4) · 2 + 6 – 2 ⋅ 2 – 1
= 9 · 2 + 6 – 2 ⋅ 2 – 1
= 18 + 6 – 4 – 1
= 24 – 4 – 1
= 20 – 1
= 19
Step-by-step explanation: