а)(90-70)×2+80=120
б)200÷(60-40)=10
в)(25+35)×4=240
г)(70+50)×2+50=290
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а)(90-70)×2+80=120
б)200÷(60-40)=10
в)(25+35)×4=240
г)(70+50)×2+50=290