Question

Alguém me ajuda por favor!!!!!!!!!
a) 12/15+4/12-2/6
/=fração
b)0,4-0,6+2/3

c) 8/3.2/2-1/3+2/3
.=multiplicação
d) 4+6/3
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6/8-8/4
e) 6+4/8
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6+2/3
f) 10/4+7+2/3.3/2
------------------------
0,3
g) 4/4+6/8-4/6
h) 0,5+1/6
-----------------
0,5

Answer 1

a)12/15+4/12-2/6 = (144+60-60)/180= 144/180 = 4/5
b) 0,4-0,6+2/3 = 4/10 - 6/10 + 2/3 = (4x3-6*3+2*10)/30 = (12-18+20/3 = 14/3
c) 8/3x2/2-1/3+2/3 = 8/3 x 1 - 3/3 =8/3 -1 = 1 x 5/3 -1 =5/3
d)4 + 6/3 = (4x3 -6)/3 =6/3 = 2
e) (6+4/8 = (6x4 +4)/8 = 20/8 = 5/2
f) 10/4+7+2/3x3/2 = 5/2 +7 +1 = (5 +7+1)/2 = 11/2
g) 4/4+6/8-4/6 = 1 + 3/4 - 2/3 = (1x12+3x3-4*3)/12 = 9/12 = 3/4
h) 5/10+1/6 = (5x6+1x10)/60 = 40/60 = 2/3