СРОЧНО ЗАДАНИЯ ИЗ КОНТРОЛЬНОЙ! СПАСИТИ

1.Выполните решения
1) -9,4+6,8=
2) 14,3+(-8,7)=
3) -2,8+(-7,6)=
4) 4,7+(-4,7)=
5) 3,8-4,4=
6) -16,7-5,5=
7) -2,2-(-15,1)=
Срочно! !
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