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GaryK [48]
3 years ago
8

George and Bella are asked to solve −3x − 30 = 5x + 18. Identify where one of them made an error.

Mathematics
2 answers:
scZoUnD [109]3 years ago
7 0

Answer:

Bella made an error in step 2

Step-by-step explanation:

The given equation is:

-3x-30=5x+18

Rearranging the like terms, we get

⇒-3x-5x=18+30

⇒-8x=48

⇒x=-6

Thus, the correct value of x is -6.

Now, Bella made a mistake in her solution as:

-3x-30=5x+18

⇒−3x − 30 − 3x = 5x + 18 − 3x  (she should add 3x on both sides rather than subtracting)

⇒− 30 = 2x + 18

⇒−30 − 18 = 2x + 18 −18

⇒− 48= 2x

⇒x=-24

Anika [276]3 years ago
4 0
For the second,
In the first step, instead of adding 3x for both sides, they subtract 3x instead.
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But the answer to both the independent and dependent variables will be provided and explained in detail.

Answer:

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 Step-by-step explanation:

The independent variable in an experiment is defined as the variable that can be changed or manipulated in order to find an outcome while the dependent variable is defined as the variable that is influenced by the changes in the independent variable.

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Step-by-step explanation:

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