Question

Say that x = 13 And y = 22
X + y (x) X - (-y) =

Answer 1

13 + 22 x 13-(-22) =783
Rules of addition and subtraction are :
1. - x - = +
2. + x - = -
3. - x + = -
In English, minus(-) multiplied(×)by itself(-) equals to addition(+).
Plus sign (+)or addition multiplied by minus equals minus :) be happy