Q. Which expression has the same value as −321+(−753) ?−321−753−753−(−321)753−(−321)−321−(−753)
Understand the problem: Understand the problem.We need to find which expression is equivalent to the given expression −3(21)+(−7(53)).
Analyze the given expressions: Analyze the given expressions.We have four options:A) −3(21)−7(53)B) −7(53)−(−3(21))C) 7(53)−(−3(21))D) −3(21)−(−7(53))We need to determine which of these is equivalent to the original expression.
Compare with option A: Compare the original expression with option A.The original expression is −3(21)+(−7(53)), and option A is −3(21)−7(53).Option A has a minus sign instead of a plus sign between the two terms, so it is not equivalent to the original expression.
Compare with option B: Compare the original expression with option B.Option B is −7(53)−(−3(21)), which simplifies to −7(53)+3(21) after changing the minus of a minus to a plus.This is not the same as the original expression because the terms are in reverse order and the signs are different.
Compare with option C: Compare the original expression with option C.Option C is 7(53)−(−3(21)), which simplifies to 7(53)+3(21).This is not the same as the original expression because the first term has a different sign.
Compare with option D: Compare the original expression with option D.Option D is −3(21)−(−7(53)), which simplifies to −3(21)+7(53) after changing the minus of a minus to a plus.This is not the same as the original expression because the second term has a different sign.
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