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Setler [38]
3 years ago
7

Subtract the sum of 5/9 and -2/9 from the sum of 7/12 and -5/12​

Mathematics
2 answers:
Firdavs [7]3 years ago
7 0

[\frac{7}{12}  + ( -  \frac{5}{12} )] -[ \frac{5}{9}   + ( -  \frac{2}{9} )] \\  \\  =   [ \frac{7}{12}  -  \frac{5}{12} ] - [ \frac{5}{9}  -  \frac{2}{9} ] \\  \\  = [  \frac{7 - 5}{12} ] -  [  \frac{5 - 2}{9} ] \\  \\  =  \frac{2}{12}  -  \frac{3}{9}  \\  \\  =  \cancel \frac{2}{12}  -  \cancel \frac{3}{9}  \\  \\  =  \frac{1}{6}  -  \frac{1}{3}  \\  \\  =  \frac{1 - 2}{6}  \\  \\  =  - \frac{1}{6}

<h3>Hope This Helps You ❤️</h3>
Inessa05 [86]3 years ago
7 0

Answer:

         \frac{-1}{6}

Step-by-step explanation:

Sum \ of \ \ \frac{5}{9} \  and \ \frac{-2}{9} =\frac{5}{9} + \frac{-2}{9} = \frac{5-2}{9} = \frac {3}{9} = \frac{1}{3}

Sum \ of \  \frac{7}{12} \ and \ \frac{-5}{12} = \frac{7}{12} \ + \ \frac{-5}{12} = \frac{7-5}{12} = \frac{2}{12} = \frac{1}{6}

subtract \ first \ from \ second = \frac{1}{6} - \frac{1}{3} = \frac{1 -2}{6} = \frac{-1}{6}

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Can someone help me with this please
stellarik [79]

Ok so we'll  go ahead and solve for y first -  we just need to get it alone on one side of the equal sign

Step 1: subtract 2x from each side

2x - 7y - 2x = 19 - 2x

This cancels out the 2x on the left, giving us

-7y = 19 - 2x

Step 2: divide both sides by -7

\frac{-7y}{-7} = \frac{19}{-7} + \frac{-2x}{-7}

This gives us

y = -19/7 + 2x/7

That should be your answer for the first question. Now solving the next parts are easy. All you need to do is plug in x.

When x = -3

y = -19/7 + 2x/7

y = -19/7 + 2(-3)/7

y = -19/7 - 6/7

y = -25/7


When x = 0

y = -19/7 + 2x/7

y = -19/7 + 2(0)/7

y = -19/7


When x = 3

y = -19/7 + 2x/7

y = -19/7 + 2(3)/7

y = -19/7 + 6/7

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Hope that helps! Feel free to ask if I can help with anything else :)

7 0
3 years ago
A/20 + 14/15 = 9/15 <br><br> Can i get some help?
KiRa [710]
Method 1:

\dfrac{a}{20}+\dfrac{14}{15}=\dfrac{9}{15}\ \ \ \ |multiply\ both\ sides\ by\ 60\\\\60\cdot\dfrac{a}{20}+60\cdot\dfrac{14}{15}=60\cdot\dfrac{9}{15}\\\\3a+4\cdot14=4\cdot9\\\\3a+56=36\ \ \ \ |subtract\ 56\ from\ both\ sides\\\\3a=-20\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\boxed{a=-\frac{20}{3}\to a=-6\frac{2}{3}}

Method 2.

\dfrac{a}{20}+\dfrac{14}{15}=\dfrac{9}{15}\ \ \ \ |subtract\ \dfrac{14}{15}\ form\ both\ sides\\\\\dfrac{a}{20}=-\dfrac{5}{15}\\\\\dfrac{a}{20}=-\dfrac{1}{3}\ \ \ \ |multiply\ both\ sides\ by\ 20\\\\\boxed{a=-\dfrac{20}{3}\to a=-6\frac{2}{3}}
3 0
3 years ago
Find the discriminat of each quadratic equation then state the number and type of solutions
Julli [10]
Hello : 
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8 0
3 years ago
This for composite figures
Vinil7 [7]

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The figure's area is twice that, so is ...

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guapka [62]

Answer:

29

Step-by-step explanation:

7 0
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