помогите пожааалуйста!
Выполните действие:
а) -7,5+4,2
б) -3,7-5,8
в) -4,7+2,9
г) 3,7-5,6
д) -[tex] \frac{7}{9} [/tex]+[tex] \frac{5}{6} [/tex]
е) -[tex]2 \frac{1}{8} [/tex]- [tex] 1\frac{5}{16} [/tex]
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