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(-15+18)2 ×[(-42):(-6)+(-2)3]3 -(-1)5×(-7+11)2

Răspuns :

(-15+18)x2x[(-42):(-6)+(-2)x3]x3-(-1)x5x(-7+11)x2=
= 3x2(7-2x3)x3-(-1)x5x4x2 =
= 6x1x3-(-1)x5x4x2 =
= 18-(-5)x8=
= 18-(-40)=
= 18+40 =
= 58 ...