3+3x3-3+3=

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3+3x3-3+3 = 3+9-3+3

Then add and subtract left to right

3+9-3+9 = 12

P there ae no parentheses

E there are no exponents

M 3+9-3+3

D there is no division

A do all of the addition (3+9)-(3+3) becomes 12-6

S do all subtraction 12-6= 6

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