190
200
-90
90+x+72+30 = 180. If you add 90+72+30, you get 192. But to get 180 you have to subtract 12. 90+(-12)+72+30 =180 if x is -12
90 + 90 + 60 = 240
190
200
-90
90+x+72+30 = 180. If you add 90+72+30, you get 192. But to get 180 you have to subtract 12. 90+(-12)+72+30 =180 if x is -12
5f + 60 = 90 90 - 60 = 30 5 * ? = 30 5 * 6 = 30 (5)6 + 60 = 90
10 plus 20 plus 30plus 40 plus 50 equals 150 because 50 plus 40 equals 90 plus 30 =120+20= 140 then + 10 = 150
90 + 90 + 60 = 240
90
3*30=90
390
When taking the volume you do not add them you multiply them. 6cm x 5cm x 3cm = 90cm2
Y=30