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Evaluate 7-(-19)-18+(-19)+18". "

Evaluate\newline7−(−19)−18+(−19)+18.  7-(-19)-18+(-19)+18 \text {. }

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Full solution

Q. Evaluate\newline7−(−19)−18+(−19)+18.  7-(-19)-18+(-19)+18 \text {. }
  1. Simplify Expression: We start by simplifying the expression using the property that subtracting a negative number is the same as adding its positive counterpart. So, 7−(−19)7 - (-19) becomes 7+197 + 19.\newlineCalculation: 7+19=267 + 19 = 26
  2. Subtract 1818: Next, we subtract 1818 from the result obtained in the previous step.\newlineCalculation: 26−18=826 - 18 = 8
  3. Add −19-19: Now, we add the next term, which is −19-19, to the current result.\newlineCalculation: 8+(−19)=−118 + (-19) = -11
  4. Add 1818: Finally, we add 1818 to the result obtained in the previous step.\newlineCalculation: −11+18=7-11 + 18 = 7

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