Q. Which expression is equivalent to −831+(−841) ?831+(−841)−841−(−831)−831−841−841+831
Understand the problem: Understand the problem.We need to find the expression equivalent to the given expression −8(31)+(−8(41)). This involves adding two fractions with different denominators.
Find common denominator: Find a common denominator for the fractions.The denominators are 3 and 4. The least common multiple of 3 and 4 is 12, so we will use 12 as the common denominator.
Convert to equivalent fractions: Convert each fraction to an equivalent fraction with a denominator of 12.For −8(31), multiply the numerator and denominator by 4 to get −8(124).For −8(41), multiply the numerator and denominator by 3 to get −8(123).
Add equivalent fractions: Add the equivalent fractions.Now we have −8(124)+(−8(123)).Combine the numerators: −8×4+(−8×3)=−32−24=−56.So the combined fraction is −1256.
Simplify the fraction: Simplify the fraction.−1256 can be simplified by dividing both the numerator and the denominator by their greatest common divisor, which is 4.−56÷4=−14 and 12÷4=3.So, −1256 simplifies to −314.
Write final expression: Write the final expression.The equivalent expression to the original problem is −314.
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