verify the following (2/5+-3/7) +-7/10=2/5+(-3/7+-7/10)
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Step-by-step explanation:
(2/5 + -3/7) + -7/10 = 2/5 + (-3/7 + -7/10)
Replace all occurrences if + - with single - .A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because 1 × -1 = -1.
(2/5 - 3/7) - 7/10 = 2/5 - 3/7 - 7/10
The left side -0.7285714 is equal to the right side -0.7285714, which means that the given statement is always true.
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