Solve the following equation:
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Solve the following equation:
Initially, we address the first parentheses in the numerator of the fraction:
According to the rules, we first must solve the multiplication exercise and then the addition:
We obtain the following exercise:
We will again address the parentheses in the numerator of the fraction. First by solving the division and then addition exercise.
We are left with the following exercise:
We divide 50 into a multiplication exercise:
We then simplify:
Lastly we solve from left to right:
4-
\( 20\div(4+1)-3= \)
Remember that dividing by a negative number changes the sign! When you have , the positive 20 divided by negative 5 equals negative 4, not positive 4.
Work from the innermost to outermost: parentheses ( ) first, then brackets [ ]. So solve before dealing with the entire bracket expression.
It's better to complete all operations in the numerator first, then divide by the denominator. Trying to simplify too early can lead to mistakes and missed steps.
Always pay close attention to negative signs! Write them clearly and double-check your final division. A positive result when the answer should be negative is a very common error.
The colon (:) means the same as - it's just another way to write division. Treat exactly like .
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