rozwiąz :
1. (-3) x (2-7) - (-6+2) =
2. (12-18) - ( 17-(-3)) : 2 =
daję 20 pkt.
1.(-3)x(2-7)-(-6+2)=(-3)x(-5)-(-4)=15-(-4)=15+4=19
2.(12-18)-(17-(-3)):2=(-6)-(17+3):2=(-6)+(-20):2=(-26):2=(-13)
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1.(-3)x(2-7)-(-6+2)=(-3)x(-5)-(-4)=15-(-4)=15+4=19
2.(12-18)-(17-(-3)):2=(-6)-(17+3):2=(-6)+(-20):2=(-26):2=(-13)