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Yuri [45]
3 years ago
12

Which operation should be performed first according to the order of operations? 21 – 5 + 24 ÷ 3 + 90 • 4

Mathematics
2 answers:
allochka39001 [22]3 years ago
7 0

Answer:

\boxed{=384}

Step-by-step explanation:

<u><em>I'll give you a hint. You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtract that came from left to right.</em></u>

First you had to multiply and divide from left to right.

21-5+24/3+90*4

21-5+8+90*4

90*4=360

21-5+8+360

Then you add and subtract from left to right.

21-5=16

16+8+360

16+8=24

24+360=384

Final answer: \boxed{=384}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

Ann [662]3 years ago
3 0
According to Order of operation, we perform: Divide then multiplication then subtraction, then sum.

In short, Your Answer would be Option C) 24To remember use PEMDAS P=parenthesis E=Exponents M=Multiply D=Divise A=Addition S=Subtraction Since you do not have parenthesis or exponents you must first multiply / 3

GOOD LUCK AND HOPE IT HELPS U
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2 years ago
Solve the system of equations
rewona [7]

Answer:

x = 1/4

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Step-by-step explanation:

Here we have a system of 3 equations with 3 variables:

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The first step to solve this, is to isolate one of the variables in one of the equations, let's isolate "y" in the second equation:

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Now that we have an expression equivalent to "y", we can replace this in the other two equations:

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Now, in the first equation we have only the variable x, so we can solve that equation to find the value of x:

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Now that we know the value of x, we can replace this in the other equation to find the value of z.

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