1)
321 + (x + 13) = 450
321 + x + 13 = 450
334 + x = 450
x = 450 - 334
x = 116
3)
204 – (x + 29) = 100
204 - x + 29 = 100
175 - x =100
-x = 100 - 175
-x = -75
x = 75
(x – 23) · 14 = 56
14x - 322 = 56
14x= 56 + 322
14x=378
x=27
Пошаговое объяснение:
1)
321 + (x + 13) = 450
321 + x + 13 = 450
334 + x = 450
x = 450 - 334
x = 116
3)
204 – (x + 29) = 100
204 - x + 29 = 100
175 - x =100
-x = 100 - 175
-x = -75
x = 75
1)
(x – 23) · 14 = 56
14x - 322 = 56
14x= 56 + 322
14x=378
x=27
Пошаговое объяснение:
Пошаговое объяснение:
1)
321 + (x + 13) = 450
321 + x + 13 = 450
334 + x = 450
x = 450 - 334
x = 116
3)
204 – (x + 29) = 100
204 - x + 29 = 100
175 - x =100
-x = 100 - 175
-x = -75
x = 75
1)
(x – 23) · 14 = 56
14x - 322 = 56
14x= 56 + 322
14x=378
x=27