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Arlecino [84]
3 years ago
11

Of the following options, what could be a possible first step in solving the equation -7x -5= x + 3

Mathematics
2 answers:
mojhsa [17]3 years ago
5 0
You would need to add 7x to both sides.
natta225 [31]3 years ago
4 0

Answer:

Option a) Adding 7x to both the sides

Step-by-step explanation:

Given is an equation linear in one variable x.

-7x -5= x + 3

To solve this equation we have to bring x terms on one side and constants on the other side.

Subtracting 5 from both sides will not eliminate the constant -5 hence wrong.

Adding x to both sides will make right side as 2x instead of eliminating x.

Combining like terms will give -7x-x not -7x+x hence incorrect

Adding 7x to both sides gets rid of x term on the left.

Hence this option is right answer

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Answer:

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Step-by-step explanation:

We can use Factor Theorem to answer this question. According to this theorem, in order to find if (x - a) is a factor of a polynomial f(x), calculate f(a). If f(a) comes out to be equal to zero, this will mean that (x-a) is  factor of f(x).

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