= ( 3233 + 6767) + ( 902 + 1098 )
= 10000 + 2000
= 12000
\(\text{= ( 3233 + 6767) + ( 902 + 1098 ) = 10000 + 2000 = 12000}\)
3233 + 6767 + 902 + 1098
= ` ( 3233 + 6767 ) + ( 902 + 1098 ) `
= `10000 + 2000 `
= ` 12000 `
3233 + 6767 + 902 + 1098
= (3233 + 6767) + (902 + 1098)
= 10000 + 2000
= 12000