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MissTica
3 years ago
14

Write an expression that can be used to find 4 *275 using mental math and properties of numbers.

Mathematics
1 answer:
Nadya [2.5K]3 years ago
8 0
275+275+275+2751=1100
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kirza4 [7]
2x+3y=17 --- 1
3x+6y=30 --- 2
x+2y=10
x=10-2y --- 3
Sub 3 into 1,
2(10-2y)+3y=17
20-4y+3y-17=0
3-y=0
y=3 --- 4
Sub 4 into 3,
x=10-2(3)
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Therefore, Answer is (4,3).
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5 0
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