Răspuns:
10x{a-10x[362+10x(23+28:4)]}=100
10{a-10[362+10(23+7)]}=100
10[a-10(362+10·30)]=100
10[a-10(362+300)]=100
10(a-10·662)=100
a-6620=100:10
a=10+6620
a=6630
10 × { a - 10 × [ 362 + 10 × ( 23 + 28 : 4 ) ] } = 100
10 × { a - 10 × [ 362 + 10 × ( 23 + 7 ) ] } = 100
10 × [ a - 10 × ( 362 + 10 × 30 ) ] = 100
10 × [ a - 10 × ( 362 + 300 ) ] = 100
10 × ( a - 10 × 662 ) = 100
10 × ( a - 6620 ) = 100
a - 6620 = 100 : 10
a - 6620 = 10
a = 6620 + 10
a = 6630
