SOLUTION: Tell whether each statement is true or false. A. -3 3/4 + 1= -3 2/3 - (-1) B. -12 7/12 + (-9 5/6) = 3 7/12 C. 6 2/5 - (-7 1/10)= 13 1/2

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Tell whether each statement is true or false. A. -3 3/4 + 1= -3 2/3 - (-1) B. -12 7/12 + (-9 5/6) = 3 7/12 C. 6 2/5 - (-7 1/10)= 13 1/2       Log On


   

Question 1049925: Tell whether each statement is true or false.
A. -3 3/4 + 1= -3 2/3 - (-1)
B. -12 7/12 + (-9 5/6) = 3 7/12
C. 6 2/5 - (-7 1/10)= 13 1/2
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Tell whether each statement is true or false.
A. -3 3/4 + 1= -3 2/3 - (-1)
left side = -3 3/4 +1 = -15/4 + 1 = -11/4
right side = -3 2/3 - (-1) = -11/3 + (3/3) = -8/3
Ans: false
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B. -12 7/12 + (-9 5/6) = 3 7/12
left side = -151/12 -59/6 = -151/12 - 118/12 = -269/12
right side = 43/12
Ans: false
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C. 6 2/5 - (-7 1/10)= 13 1/2
left side = 32/5 + 71/10 = 64/10+71/10 = 135/10
right side = 27/2 = 135/10
Ans: true
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Cheers,
Stan H.
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Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

A.
-3+3%2F4 + 1= -3+2%2F3 -+%28-1%29
-15%2F4%2B+1=+-11%2F3%2B1
-15%2F4%2B+4%2F4=+-11%2F3%2B3%2F3
-11%2F4=+-8%2F3
-11%2A3=+-8%2A4
-33%3C%3E+-32-> so,-3+3%2F4 + 1= -3+2%2F3 -+%28-1%29 is false


B.
-12+7%2F12 + (-9+5%2F6) = 3+7%2F12
-151%2F12+%2B+%28-59%2F6%29+=+43%2F12
-151%2F12+-59%2F6+=+43%2F12
-151%2F12+-118%2F12+=+43%2F12
-269%2F12+=+43%2F12
-269+%3C%3E+43-> -12+7%2F12 + (-9+5%2F6) = 3+7%2F12 is false


C.
6+2%2F5 - (-7+1%2F10)= 13+1%2F2
32%2F5+-+%28-71%2F10%29=+27%2F2
32%2F5+%2B71%2F10=+27%2F2
64%2F10+%2B71%2F10=135%2F10
%2864+%2B71%29%2F10=135%2F10
135%2F10=135%2F10-> so, 6+2%2F5 - (-7+1%2F10)= 13+1%2F2 is true