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To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: We are given the expressions and . These need to be combined.
Step 2: Convert the mixed number to a decimal or improper fraction.
As an improper fraction, .
As a decimal, can be approximated to .
Step 3: Add the coefficients:
Using decimals: .
Using fractions: Convert to and add .
First, convert to have a common denominator with , which is .
Sum these, which simplifies to .
Thus, .
Therefore, the solution to the problem is .
a is negative number.
b is negative number.
What is the sum of a+b?
Either method works! For this problem, fractions are often cleaner: . With decimals: 0.5 + 7.25 = 7.75, but converting back to mixed numbers can be trickier.
Multiply the whole number by the denominator, then add the numerator: . So .
You should get the same answer! If they're different, check your conversions. and are all equivalent.
You're thinking like this is three separate terms, but is actually one term with coefficient . Don't split mixed numbers apart!
Like terms have identical variable parts. Here, both terms have 'x', so they're like terms. and would NOT be like terms because of different exponents.
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