1.tentukan hasil operasi hitung campuran berikut! a. 6.575+9.457-8.594+7.777 b. 210x5+521-120:12 c. (52x12):(13x6) d. 11.250:15-285 pakai cara ya terima Kasih

a. (6.575+9.457)-8.594+7.777= (16.032-8.594)+7.777= 7.438+7.777=15.215.
b. (210x5)+521-(120:12)= 1.050+521-10=1.571-10=1.561.
c. 624:78= 8.
d. (11.250:15)-285= 750-285= 465.

a.( 6575 + 9457 ) - ( 8594 + 7777 ) = 16.032 - 16.371
                                                          = - 339
b.1050 + 521 -10 = 1050 + 511= 1561
c.624 : 78 = 8
d.750 - 285 = 465