@TauAgain@Ella_5b8 In many cases.. people use a raised - to differentiate negative from a minus, so no, it isnt incorrect to have a minus at the top instead of the center.
@TauAgain@Ella_5b8 finally someone's thinking beyond positive numbers.. but if you move that 1 from the -1 (7) to the back, you get -311 which is a smaller number than -131
@RulezVT@Arden_2210 You're right, it is 4, but not the way you did it.
a+a*a = 20
a + (a * a) = 20 - you do that first because of BIDMAS / BODMAS
a + aยฒ = 20
That way, 4 becomes
4 + 4ยฒ
which turns into 4 + 16 = 20