The sum of two consecutive integer is 43
43/2=21.5knowing x1+x2=4321+22=43
that is 22 and 21:22 + 21 = 43if we write equations to find them, we say, numbers are a and b, they are consecutive so:b = a + 1a + b = 43we substitute one in the other equation:a + (a + 1) = 432a = 42a = 21thenb = a + 1 = 21 + 1b = 22
