а)-4,5+(-17) г)-6,4+(-3,6)
д)-5,8+(-1,8)
е)3,74+(-1,74)

б)-7+(-12)
в)-140+(-60)
помогите пож СРОЧНО¡¡¡¡¡¡¡¡¡¡¡¡!!!!!!!!!!!!
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