42240: (140*х-860)=352 (х+1018): 70=850 (28+х)*19=1500-360 х*35-128: 4=3573 х*53: 15=424 (138*х): 64=234 решить уровнения
237
299
Ответы на вопрос:
1) 140x - 860 = 42240 : 352 = 120 140x = 120 + 860 = 980 x = 980 : 140 = 7 2) x + 1018 = 850 * 70 = 59500 x = 59500 - 1018 = 58482 3) ( 28 + x ) * 19 = 1140 28 + x = 1140 : 19 = 60 x = 60 - 28 = 32 4) x * 35 - 32 = 3573 35x = 3573 + 32 = 3605 x = 3605 : 35 = 103 5) 53x = 424 * 15 = 6360 x = 6360 : 53 = 120 6) 138x = 64 * 234 = 14979 x = 14976 : 138 = 108.521 ( округляем до 109 )
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