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aika181
@aika181
September 2021
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25hjoerf10
1) 0,3 - (а - 2) = 0,3 - а + 2 = 2,3 - а
а = 0,7
2,3 - 0,7 = 1,6
2) 3 - (4 + b) = 3 - 4 - b = - 1 - b
b = 5
- 1 - 5 = - 6
3) 2.5 + (c - 1) = 2.5 + c - 1 = 1.5 + c
c = 0.4
1.5 + 0.4 = 1.9
4) 10 - (8.7 - d) = 10 - 8.7 + d = 1.3 + d
d = 1.2
1.3 + 1.2 = 2.5
5) 0.9 + (6 - a) = 0.9 + 6 - a = 6.9 - a
a = 9.3
6.9 - 9.3 = - 2.4
6) 6.3 - (7 - b) = 6.3 - 7 + b = - 0.7 + b
b = 0.8
- 0.7 + 0.8 = 0.1
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Answers & Comments
а = 0,7
2,3 - 0,7 = 1,6
2) 3 - (4 + b) = 3 - 4 - b = - 1 - b
b = 5
- 1 - 5 = - 6
3) 2.5 + (c - 1) = 2.5 + c - 1 = 1.5 + c
c = 0.4
1.5 + 0.4 = 1.9
4) 10 - (8.7 - d) = 10 - 8.7 + d = 1.3 + d
d = 1.2
1.3 + 1.2 = 2.5
5) 0.9 + (6 - a) = 0.9 + 6 - a = 6.9 - a
a = 9.3
6.9 - 9.3 = - 2.4
6) 6.3 - (7 - b) = 6.3 - 7 + b = - 0.7 + b
b = 0.8
- 0.7 + 0.8 = 0.1