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anzhelika [568]
3 years ago
9

Xiao's teacher asked him to rewrite the sum 60+ 90 as the product of the GFC of the two numbers and a sum. Xiao wrote 3(20+30).

What mistake did Xiao make? How should he have written the sum?
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
3 0
The greatest common factor here is not 3, it's 30.
so it should be 30(2+3)

hopefully this helps!
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Given the equation −4x + 10 = 2, which order of operations completely solves for x?
hammer [34]
Hi there!

Answer:
The answer is "<span>Subtract 10, then divide by −4"

Explanation:
To solve a linear equation (for x) we need to isolate the variable (x). First we need to bring the variables to the left side (in this case, it is already on the correct place). Next up is bringing all the integers to the right side. Therefore, we must first subtract 10. Our final step is dividing by the number that is placed in front of x (in this case divide by </span><span>−4)
</span><span>
Solving the equation:
</span><span>−4x + 10 = 2
First subtract 10 (from both sides of the equation)

</span>−4x  = −8
Divide by −4

x = −8 / −4 = 2
Therefore, the solution is x = 2

I hope this anwer helps you!

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