Решебник по математике 5 класс Мерзляк ФГОС Задание 271

 

\[\boxed{\mathbf{271\ (271)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ (134 + x) - 583 = 426\]

\[134 + x = 426 + 583\]

\[x = 1009 - 134\]

\[x = 875\]

\[Ответ:875.\]

\[2)\ (208 + x) - 416 = 137\]

\[208 + x = 137 + 416\]

\[x = 553 - 208\]

\[x = 345\]

\[Ответ:345.\]

\[3)\ (x - 506) + 215 = 429\]

\[x - 506 = 429 - 215\]

\[x = 214 + 506\]

\[x = 720\]

\[Ответ:720.\]

\[4)\ (y - 164) + 308 = 500\]

\[y - 164 = 500 - 308\]

\[y = 192 + 164\]

\[y = 356\]

\[Ответ:356.\]

\[5)\ (942 - a) - 126 = 254\]

\[942 - a = 254 + 126\]

\[a = 942 - 380\]

\[a = 562\]

\[Ответ:562.\]

\[6)\ (801 - b) - 224 = 368\]

\[801 - b = 368 + 224\]

\[b = 801 - 592\]

\[b = 209\]

\[Ответ:209.\]

\[7)\ 475 - (x - 671) = 325\]

\[x - 671 = 475 - 325\]

\[x = 150 + 671\]

\[x = 821\]

\[Ответ:821.\]

\[8)\ 972 - (y - 504) = 284\]

\[y - 504 = 972 - 284\]

\[y = 688 + 504\]

\[y = 1192\]

\[Ответ:1192.\]

\[9)\ 403 - (634 - a) = 366\]

\[634 - a = 403 - 366\]

\[a = 634 - 37\]

\[a = 597\]

\[Ответ:597.\]

\[10)\ 643 - (581 - b) = 292\]

\[581 - b = 643 - 292\]

\[b = 581 - 351\]

\[b = 230\]

\[Ответ:230.\]

\[11)\ 987 - (x + 364) = 519\]

\[x + 364 = 987 - 519\]

\[x = 468 - 364\]

\[x = 104\]

\[Ответ:104.\]

\[12)\ 3128 - (m + 425) = 1509\]

\[m + 425 = 3128 - 1509\]

\[m = 1619 - 425\]

\[m = 1194\]

\[Ответ:1194.\]

\[\boxed{\mathbf{271}.\ }\]

\[272 - (125 + y) =\]

\[= (272 - 125) - y = 147 - y.\]