Mathematics, 27.04.2021 01:50 emilyturchon
Renan found the sum (4.2x + 3) + (5.7x – 2) + (5 – 2.6x), as shown.
4.2x + 3 + 5.7x – 2 + 5 – 2.6x
4.2x + 5.7x + 2.6x + 3 – 2 + 5
(4.2 + 5.7 + 2.6)x + 3 – 2 + 5
12.5x + 6
What was Renan’s error in adding the expressions?
A. He used the commutative property incorrectly.
B. He used the distributive property incorrectly.
C. He added incorrectly.
D. He multiplied incorrectly.
Answers: 2
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Renan found the sum (4.2x + 3) + (5.7x – 2) + (5 – 2.6x), as shown.
4.2x + 3 + 5.7x – 2 + 5 – 2.6x...
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