Quick maths minus 1 by 2 + 1 by 3 minus 1 by 4 minus 1 by 2 minus 1 by 3 + 1 by 4 + 1 by
2+2 IS 4 MINUS 1 THATS THREE QUICK MATHS - YouTube
What Is 3/4 Minus 1/2
Step explanation 2+2 is 4 minus 1 thats three quick maths