Question

7×{3005-4×[a+6×(6×29-96)]}=1435. dau coroana

Answer 1

7×{3005-4×[a+6×(6×29-96)]}=1435
3005-4×[a+6×(6×29-96)]=1435:7
3005-4×[a+6×(6×29-96)]=205
4×[a+6×(6×29-96)]=3005-205
4×[a+6×(6×29-96)]=2800
a+6×(6×29-96)=2800:4
a+6×(6×29-96)=700
a+6×(174-96)=700
a+6×78=700
a+468=700
a=232

Answer 2

7 ×{3005-4×[a+6×(174-96)]}=1435
7×[3005-4×(a+6×78)]=1435
7×[3005-4×(a+468)]=1435
3005-4×(a+468)=1435÷7
3005-4×(a+468)=205
4×(a+468)=3005-205
4×(a+468)=2800
a+468=2800÷4
a+468=700
a=700-468
a=232