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a) 3 2/7 *5= 23/7 *5=115/7= 16 3/7
b)-4 ¹/₆*(-2 ²/₅)=- 25/6 * (-12/5)= 10
c) 2 ¹/₇ :5= 15/7 * 1/5= 3/7
e)5⅚:3¹/₉= 35/6 : 28/9 =35/6*9/28= 15/8=1 7/8
f) 6⁷/₈+2³/₄= 6 7/8 + 2 6/8= 8 13/8 = 9 5/8
d)1 3/5
g) -7⁸/₁₅+2⁵/₆= -7 16/30 + 2 25/30 = - 5 9/30
h) 12,22
i)-4,48
j)-2,66
k)80
l)-0,14
a) 3 2/7 * 5=16 3/7
b) -25/6*(-12/5)=10
c)15/7*1/5=3/7
d)5*8/25=8/5
e)35/6*9/28=15/8
f)6 21/28 + 2 18/24= 9 15/24= 9 5/8
g) - 7 16/30 + 2 25/30= - 4 21/30= -4 7/10
h)12,22
i)-4,68
j) -2,66
k)80
l)-0,14