First, we will simplify each equation step by step:
78×18 + 210= 1404 + 210= 1614
107×11 - 408= 1177 - 408= 769
65×21 - 22= 1365 - 22= 1343
12×87 +412= 1044 + 412= 1456
Therefore,78×18 + 210 = 1614107×11 - 408 = 76965×21 - 22 = 134312×87 + 412 = 1456
First, we will simplify each equation step by step:
78×18 + 210
= 1404 + 210
= 1614
107×11 - 408
= 1177 - 408
= 769
65×21 - 22
= 1365 - 22
= 1343
12×87 +412
= 1044 + 412
= 1456
Therefore,
78×18 + 210 = 1614
107×11 - 408 = 769
65×21 - 22 = 1343
12×87 + 412 = 1456