Answers

2015-08-25T19:04:35+08:00
121 x 4 + 116 - 145 or 121 (4 + 116 - 145) ?

I am answering both questions.
121 x 4 + 116 - 145
484 + 116 - 145
600 - 145
= 455

121 (4 + 116 - 145)
121 (120 - 145)
121 (-25)
= -3025
0
2015-08-26T14:10:06+08:00
(21 × 4) + (116 - 145)

484 + 29

=513
0