NO! Do it one at a time:
330-150=180
180-60=120
120 is the answer.
EXPLANATION:
you have to do it from left of the screen towards the right. DO NOT subtract 60 from 150 because 150 doesn't have a positive sign in front of it (+150), instead it has a negative sign (-150) so basically the equation looks like this, if you are adding:
330 + (-150) + (-60)
so when you are combining two negative numbers, it's like adding them but keeping the negative sign, thus (-150)+(-60)=(-210).
So it is actually 330 + (-210) or 330-210=120. :)
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, . . .
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, . . .
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, . . .
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, . . .
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, . . .
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330 and 360.
these are some of the multiples: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, etc. you can go on they're infinite hope i helped :)
240
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, ...
The multiples of 30 are 30 60 90 120 150 180 210 240 270 300 330 360 390 420 ect.
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, . . .75, 150, 225, 300, 375, 450, 525, 600, 675, 750, 825, . . .
15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375, 390, 405, 420, 435, 450