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4 by 7 and 5 by 7 if a = 2 - 11 by 27, B equals to 4 by 9 and C equals to minus 5 by 8 in then verify that a + (b +c)=(a+b)+c |
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Answer» not surred Step-by-step EXPLANATION: a=2-11/27=-72/216 b=4/9=96/216 c=-5/8= -135/216 a+(b+c)=(a+b)+c -72{96+(-135)} ={(-72)+96}+(-135) -72{ 96-135}={96-72}-135 -72{-39}={24}-135 2808=-3240 |
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