August 2021 2 7 Report
Помогите решить примеры )
1) -(7a)
2) -(-12b)
3) x+(-y)-(-8)
4) -2x-(-5)-(-2x)
5) -3*(-2b)
6) 2x*(-3x)
7) a-(-y)+(-9)
8) -(-3,6)+5,1-8,7
9) -4*(17,3*(-2,5))
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