1.
1) 7,2 - 7 1/3 = -4/30 = -2/15
2) -2/15 : -4/9 = 18/60 = 3/10
3) 6 1/4 * -3,2 = -800/40 = -20
4) 3/10 + -20 = -197/10 = -19 7/10
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Answers & Comments
1.
1) 7,2 - 7 1/3 = -4/30 = -2/15
2) -2/15 : -4/9 = 18/60 = 3/10
3) 6 1/4 * -3,2 = -800/40 = -20
4) 3/10 + -20 = -197/10 = -19 7/10