А)5d=-85,6-3d б)5b - 5b+1=1b+1 --- --- --- --- 6 9 2 3
А)5d=-85,6-3d
б)5b - 5b+1=1b+1
--- --- --- ---
6 9 2 3
Гость
Ответ(ы) на вопрос:
Гостьа) 5d=-85,6-3d 8d+85.6=0 d=-85.6/8 d=-10.7
б) (5b)/6-(5b+1)/9=(1b)/2+1//3 (5//6)b-(5*b/9+1/9)-b/2-(1//3)=0 (5//6)b-((5//9)b+(1//9))-b/2-(1//3)=0 (5//18)b-(1//9)-b/2-(1//3)=0 -(2//9)b-(1//9)-(1//3)=0 -(2//9)b-(4//9)=0
b=(4//9)/(-(2//9))
b=-2
// - черта дроби
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