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how to simplify (33 + 45) + 7

please answer!

3 Answers by Expert Tutors

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Lisa M. | Lisa - Experienced Reading TutorLisa - Experienced Reading Tutor
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Dear Tyler,

This is a common Algerbra problem. You would start by solving the problem inside the parenthesis first. Then, add the answer to 7. Finally, use addition to finalize the equation so both sides are equal.

Good Luck!

Efe M. | Licensed Energetic, Creative, and Motivational Math TeacherLicensed Energetic, Creative, and Motiva...
4.8 4.8 (63 lesson ratings) (63)
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Hi Tyler,

To simplify this problem you would start by solving what is inside the parentheses. So:

  • (33 + 45) + 7 = 78 + 7

Now that we have solved what was inside the parentheses and removed the parentheses the problem is now simple addition. 

Hope this helps.

Nataliya D. | Patient and effective tutor for your most difficult subject.Patient and effective tutor for your mos...
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This kind of problem requires to use associative and commutative properties of addition.
a + b + c = (a + b) + c = a + (b + c)
a + b = b + c
~~~~~~~~~~~ 
(33 + 45) + 7 =
 33 + 45 + 7 = 
 45 + 33 + 7 =
 45 + (33 + 7) =
 45 +     40    =  85