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30.06.2019 •
Mathematics
Alice solved the following equation: -18 - 3 x = 12 -3 x = 6 x =-2 which of the following statements is true? alice is correct. the 6 should be 30 in step two. the 6 should be -6 in step two. the 6 should be -4 in step two.
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Ответ:
EXPLANATION
Following the Addition Property of Equality, you have to transpose the constant term to the other side by adding its negative or opposite value on both sides.
That is,
-18 - 3 x = 12
-18+18 - 3 x = 12+18
-3x=30
Following the equation, you'll have
-3x=30
x=-10
Ответ:
Width = 3
Width:
3x + 3x + x + x = 24
8x = 24
X = 3
Length:
3(3) = 9