1) ( 39 + х ) - 84 = 78
х = 78 + 45
х = 123
2) ( х - 83 ) + 316 = 425
х = 425 - 233
х = 192
3) ( 600 - х) - 92 = 126
х = 508 - 126
х = 382
4) 253 - ( х - 459 ) = 138
х = 712 - 138
х = 574
Ответ:
1) (39 + x) – 84 = 7839+x-84=78-45+x=78x=78+45x=1232) (x – 83) + 316 = 425x-83+316=425x+233=425x=425-233x=1923) (600 – x) – 92 = 126600-x-92=126508-x=126-x=126-508-x=-3824) 253 – (x – 459) = 138253-x+459=138712-x=138-x=138-712-x=-574x=574
Пошаговое объяснение:
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1) ( 39 + х ) - 84 = 78
х = 78 + 45
х = 123
2) ( х - 83 ) + 316 = 425
х = 425 - 233
х = 192
3) ( 600 - х) - 92 = 126
х = 508 - 126
х = 382
4) 253 - ( х - 459 ) = 138
х = 712 - 138
х = 574
Ответ:
1) (39 + x) – 84 = 78
39+x-84=78
-45+x=78
x=78+45
x=123
2) (x – 83) + 316 = 425
x-83+316=425
x+233=425
x=425-233
x=192
3) (600 – x) – 92 = 126
600-x-92=126
508-x=126
-x=126-508
-x=-382
4) 253 – (x – 459) = 138
253-x+459=138
712-x=138
-x=138-712
-x=-574
x=574
Пошаговое объяснение: