Ответы на вопрос:
1)84,7: (х+2,7)=11 11(x + 2.7) = 84.7 11x + 29.7 = 84.7 11x = 84.7 - 29.7 11x = 55 x = 55/11 x = 5 2)(8,65+3,45): х=-5 -5x = 12.1 x = -12.1/5 x = -2.42 3)(у+1,6)*(-12)=76,8 -12y + 19.2 = 76.8 -12y = 76.8 - 19.2 -12y = 57.6 y = -57.6/12 y = -4.8
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