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WEBSITE: http://www.teachertube.com Solving Systems with 3 variables
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How do I solve for x? 9x3(x+5)=5x+9+3x
9x3(x+5)=5x+9+3x 9x3x15=5x+9+3x 9x3x5x3x=15+9 2x=24 x=12 spanish to english

If a person can swim 2.3 mph, how long does it take to swim 5 miles?
I think it's 2 hours, 10 minutes, and 26 seconds.
We know that: d = rt
So, 5 = 2.3t t = 5/2.3 t = 2.173913043
So, 2 hours and a decimal remainder we need to convert to minutes ...

How to solved this problem? 5•23(53)+2•3
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Solve using elimation. Can you please help me? X2+2z=7 y+z= 1 X= 2y+3z
y + z = 1 => z=1y. X= 2y+3z replace x and z in "X2+2z=7", we have: 2y+3z2+2(1y)= 7 2y+3(1y)2+2(1y)= 7 2y+33y2+22y= 7 3y=73+22 3y=10 ...