Graphic algebra problems. Very easy

Select your preferred difficulty level for algebra exercises. Very easy. Free and interactive.

camion4.png + camion4.png = 2
tractor.png + tractor.png - 1 = 1
avion2.png + avion2.png - 3 = 1
Can you calculate the value of each of the elements?
camion4.png =
tractor.png =
avion2.png =