What does 2 plus 2 equal
2+2=4 since all your doing is adding
easy it is called mathematical proving, first you add the two numbers 2+2=1+1+1+1=0.9+0.1+0.9+0.1+0.9+0.1+0.9+0.1=4 but the odd thing is if we multiply (2+2)x0 =0so (2+2) is a real true number hope this helped
