The sum of a number and 2 times the number is 21. Find the number.
2 answers:
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Given numbers -1/3 and -1 2/3.
On the number line first we plot -1/3.
We have negative numbers on left side of 0.
First number on left side of 0 is -1.
1/3 is the fraction third part of 1.
So, we need to plot a point on one third part between 0 and -1 from 0.
We need to add/subtract -1 2/3 into that -1/3 now.
We have 2/3 fraction with -1. So, we would move 2/3rd from 0 to -1.
We already at 1/3rd part between 0 and -1. The remaining part between 0 and -1 is 2/3rd part of 0 to -1.
So, moving -2/3 more to -1/3, we get exectly at -1.
And because we have -1 in front of 2/3 fracion in -1 2/3.
So, we would move one more number to left of -1 because we are exactly on -1 after moving -2/3rd of -1/3 point.
So, we would go exactly at -2.
