If '-' stands for division, '+' stands for multiplication,'`-:`' stands for subtraction and 'x' stands for addition, then which one of the equation is correct?

Options

A. `30+5-12-:8xx12=70`
B. `30-5+12-:8xx12=76`
C. `30xx5-12+8-:12=60`
D. `30-:5xx12+8-12=24`

Answer

B

Explanation

Option (1)
`30+5-12-:8xx12=70`
After changing the signs
`30xx5-:12-:8+12=70`
or, `30xx(5)/(12)-8+12=70`
or, `(25)/(2)-8+12=70`
or, `25-16+24=70xx2`
or, `33ne140`
Option (2)
`30-5+12-:8xx12=76`
After changing the signs
`30-:5xx12-8+12=76`
or, `6xx12-8+12=76`
or, `72-8+12=76`
or, `84-8=76`
or, `76=76`
Option (3)
`30xx5-12+8-:12=60`
After changing the signs
`30+5-:12xx8-12=60`
or, `30+(5)/(12)xx8-12=60`
or, `30+(50)/(3)xx2-12=60`
or, `30+(10)/(3)-12=60`
or, `90+10-36=60xx3`
or, `64ne180`
Option (4)
`30-:5xx12+8-12=24`
After changing the signs
`30-5+12xx8-:12=24`
or, `30-5+12xx(8)/(12)=24`
or, `30,-5+8=24`
or, `33ne24`