jannadwhite2435
16.01.2020 •
Mathematics
Twice a number decreased by 20 is 50. what is the number
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Ответ:
For each equation give X a value and solve for Y, do this at least two times for each equation.
Plot those dots on a graph to draw two lines.
The solution is where the two lines cross.
You will see the lines cross at (-1,-2)