+0 ,4 +2 x -0,5 -3 -2 x x...created date 1/4/2017 4:06:54 pm

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(-2) x 4 = -8 ; ( -2) x (-4) = +8

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4

5 1

331

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2- 0,57

01

=

=

=

= 02

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x +2+0 ,4

x-2-3-0,5

x

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