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geovannapma
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(5/8+5/4+5/2)•(-8/5)

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lorennasa

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(5/8+5/4+5/2)•(-8/5)
a) 7/5-3/5 =                  b) 4/8+2/8 =                  c) 3/4+5/12 =
2+2+3-5+7-8+4+5+7+8+9
2 -8 +3² - [5 + 4- (8 . 2) ]+3 . 2 - 5= - 2 + 3 -- 5 . 2 + 3 : ( - 1 ) +[ 5 .( 2 + 3 ) - 7] =
1- efetue as adições ( +2/5 ) + ( - 1,3 ) (- 2/3 ) + ( -5/6 ) ( + 3/5 ) + ( -1/3 ) + ( -...
2/6+9x6.8+22/8 2+/*.254 20*5/+69- 2+3,*4/2 92+5)/5 2/5+9-8
9+[4+2.(6-4)+(2+5)+(2+5)]-8
-20-5*[(-2).(4-7)+8-2*5
(-3).(+2).(-4) 8.(-1).(-4) (-5).(-5).(+4)
Efetue as divisões. A)3/1*4/2 b) 1/3*8/4 c)2/7*7/5 d)1/8*5/3 e)4/1*3/5 f)3/2*5/4 g)2/1*3/8 h)7/10...