(50×3-5)×2+100:(1+1)-40=300
(150-5)×2+100:2-40=300
145×2+50-40=300
290+10=300
300=300
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50×3-(5×2+100):(1+1)-40=65
50×3-(10+100):(2)-40=65
150-(110):(2)-40=65
150-55-40=65
95-40=65 не верно
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50(3+5×2)+100:(1+1)+40=750
50(3+10)+100:(2)+40=750
50 ×13+50+40=750
650+50+40=750
700+40=750 не верно
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50×3+5×2-100:(1+1)-40=60
150+5×2-100:(2)-40=60
150+10-50-40=60
160-50-40=60
110-40=60 не верно