32+/-23/-57+(-23) -8+/-4/-(-12)+5 45-5.(12+9) 24.(16-5)-16.(24-5) 13.(23+22)-3.(17+28)3(2x+1)-19=14 4x-40=/-4/+12 x+x+x+91=-2 -132-(3x+1)=(-2).(-27) /5x+1/=11

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