David W. answered • 04/16/17
Tutor
4.7
(90)
retired
2x((1176/(1x((((140/7)/5)?4)x7)))/8)
First, some assumptions [so, PLZ change appropriately if they are not true]:
This is:
2 * ((1176 / (1 * ((((140 / 7) / 5) / 4) * 7))) / 8) [assume, since "?" is over "/"]
Now, the rules of P-E-M-D-A-S apply. Note that P-E-M-D-A-S is used within parentheses until a number is obtained, then the parentheses are removed.
2 * ((1176 / (1 * ((((140 / 7) / 5) / 4) * 7))) / 8)
--------- [first ")", so do "P", has "/" inside, so do "D" first, rescan]
2 * ((1176 / (1 * ((( 20 / 5) / 4) * 7))) / 8)
--------------- [")", so do "P, has "/" inside, so do "D" first, rescan]
2 * ((1176 / (1 * (( 4 / 4) * 7))) / 8)
-------------------- [")", so do "P", has "/" so do "D" first, rescan]
2 * ((1176 / (1 * ( 1 * 7))) / 8)
-------------------------- ["), so do "P" doing "M" first, rescan]
2 * ((1176 / (1 * 7 )) / 8)
---------------------------------- [")", so do "P" doing "M first, rescan]
2 * ((1176 / 7 ) / 8)
-------------------------------------------- ["(", so do "P" group, rescan]
2 * ((1176 / 7 ) / 8)
-------------------------------------------- [")", so do "P" group, rescan]
2 * ( 168 / 8)
------------------------------------------------- [")", so do "P" group, rescan]
2 * 21
____________________ ["*", so do "M", rescan]
42 [done, because no more P-E-M-D-A-S]
