As shown below, the 'Order of operations' can make quite a difference to the answer.
6 × 2 − 25 + 7 = -6
(6×2) − (25+7) = -20
6×(2−25+7) = −96
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4 and 1/6=25/6, and 2 and 1/3=7/3. So 25/6 + 7/3 = 25/6 + 14/6 = 39/6 = 6 and 3/6 =6 and 1/2
12+5+6-2+5+6+7+52+36+63-2-8-9-6 17 + 4 + 11 + 59 + 99 - 10 - 15 21 + 70 + 99 - 25 91 + 99 - 25 91 + 74 165 the answer is 165
If: 9x+7 = 6x+25 Then: x = 6
6 + 13 + 2 + 12 + 7 + 14 = 54
9 + 6 - 2 + 7 - 10 = -4