У простите выражения 1)(x-1)+(2-7,5x) 2)(2p+1,9)-(7-p) 3)(3-0,4a)-(10-0,8a) 4)3(6-5x)+17x-10 5)8(3y+4)-29y+14 6)7(2z-3)+6z-12. Помогите плиз. Заранее спасибо
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