2 years ago

Twice a number divid by 6 is 42

Mathematics

2 answers:

il63 [147K]2 years ago

8 0

A number=x

2x/6=42
2x=252 by multiplying both sides by 6
x=126 by dividing both sides by 2 to isolate the variable

Natalija [7]2 years ago

3 0

Let’s call this number ‘n’.

Twice a number is 2n.

2n / 6 = 42

2n = 252

n = 126.

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konstantin123 [22]

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Answer:

Step-by-step explanation:

The step shown indicates that y was eliminated from the equations. For choices A, B, D, this is done by adding the equations together (the y-coefficients are opposites). The result of doing that gives x-terms of 4x, 0x, and 0x, respectively. These x-terms do not match the one given: 2x.

For choice C, the y-term is eliminated by subtracting twice the second equation from the first. Doing that gives ...

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