MATMA.
a) [(-0,5)* 4/5 -(-0,8) * 10/12 ] : [1-(1 - 2/3 )*(2/3 - 1)]=
b)-2,1 + (- 4/3)*9 : 0,1 + 2.125=
a) [(-0,5)* 4/5 -(-0,8) * 10/12 ] : [1-(1 - 2/3 )*(2/3 - 1)] = [(-1/2)*4/5-(-8/10)*10/12] : [1-(1/3)*(-1/3)] = [2/5-(-2/3)]:[1-(-1/9)] = [6/15+10/15]:[10/9] = 16/15:10/9 = 16/15*9/10 = 24/25
b)-2,1 + (- 4/3)*9 : 0,1 + 2.125= -2,1+(-12):0,1+2,125 = -2,1+(-120)+2,125 = -2,1-120+2,125 = -119,975
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a) [(-0,5)* 4/5 -(-0,8) * 10/12 ] : [1-(1 - 2/3 )*(2/3 - 1)] = [(-1/2)*4/5-(-8/10)*10/12] : [1-(1/3)*(-1/3)] = [2/5-(-2/3)]:[1-(-1/9)] = [6/15+10/15]:[10/9] = 16/15:10/9 = 16/15*9/10 = 24/25
b)-2,1 + (- 4/3)*9 : 0,1 + 2.125= -2,1+(-12):0,1+2,125 = -2,1+(-120)+2,125 = -2,1-120+2,125 = -119,975