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navik [9.2K]
3 years ago
14

Which addition equation matches the number line

Mathematics
2 answers:
Alborosie3 years ago
5 0

Answer:

\frac{2}{3}+(-2\frac{1}{3})=-1 \frac{2}{3} is correct.

Step-by-step explanation:

The number line between two consecutive integers is divided into 3 intervals. This means each of these intervals is 1/3. For example, starting from 0 towards right the first small line is at 1/3, the next at 2/3 and then at 3/3 = 1.

Similarly, towards the left of 0, we have -1/3, -2/3 and then-1. Based on this data, we can find the end points of the given line

  • The location of right end point is 2/3
  • The location of left end point is (-1\frac{2}{3} )

The distance between two endpoints can be calculated as:

Right End point - Left End point

=\frac{2}{3} - (-1\frac{2}{3})\\\\ =\frac{2}{3} + 1\frac{2}{3}\\\\ =\frac{2}{3}+\frac{5}{3}\\\\ =\frac{7}{3}\\\\ =2\frac{1}{3}

So, the equation can be set up as:

\frac{1}{3}-(-1\frac{2}{3})=2\frac{1}{3}\\\\ \frac{1}{3}= 2\frac{1}{3}+(-1\frac{2}{3})\\\\ \frac{1}{3}-2\frac{1}{3}=-1\frac{2}{3}\\\\ \frac{1}{3}+(-2\frac{1}{3})=-1\frac{2}{3}

Which matches with the final option.

Keywords: addition, graph, number line

Learn more addition and number line from brainly.com/question/5057056

#learnwithBrainly

aksik [14]3 years ago
3 0

Answer:

The answer is 2nd equation

Step-by-step explanation:

Since, this line goes from \frac{2}{3} till -1-\frac{1}{3}, therefore,

\frac{2}{3} + (-1-\frac{1}{3})

\frac{2}{3} + (-\frac{4}{3})

\frac{-2}{3}

-1\frac{1}{3}

and this is equal to right hand side of the equation in option two, i.e.

\frac{2}{3} + (-2) = -1\frac{1}{3}

Hence, 2nd equation is the answer.

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