Question

Ex 2 B. Ajutoor va rooog!!

Answer 1

Explicație pas cu pas:

b) (30x-20)/30-(24×+72)/30+180/30=[15(5×+10)]/30

(30×-20-24×-72+180)/30=(75×+10)/30

(6×+88)/30=(75×+10)/30

(+88-10)/30=(75×-6×)/30

78/30=69×/30

×=(78•30)/(69•30)

x=78/69=26/23