Ответы на вопрос:
A1) y (5+7)=12y 2) -a( 13+4) =-17a 3) 7- x( 1-8) =7+7x = 7( 1+х) 4) y(1+6-2)=5y 5) x( 15-1-1) =13x 6) 11 +a( 11+1) =11+12a b 1) 8х -5*(3-х)= 8х -15 +5х=13х-15 2) -2*(4-5y)+(1-y) = -8 +10y +1-y =- 7+9y
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