( - 3/4+2/5) + (3,7-7,95) - (3,6)=-8 1/5
1) -3/4+2/5=-15/20+8/20= - (15/20-8/20)=-7/20
2) 3,7-7,95=-4,25
3) -7/20+(-4,25)= - 4 3/5
4) - 4 3/5 - 3,6= -23/5-36/10= -46/10-36/10=-82/10=-8 2/10 = - 8 1/5
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Answers & Comments
( - 3/4+2/5) + (3,7-7,95) - (3,6)=-8 1/5
1) -3/4+2/5=-15/20+8/20= - (15/20-8/20)=-7/20
2) 3,7-7,95=-4,25
3) -7/20+(-4,25)= - 4 3/5
4) - 4 3/5 - 3,6= -23/5-36/10= -46/10-36/10=-82/10=-8 2/10 = - 8 1/5