Ответ:
1) x - 9 = 15
x = 15 + 9
x = 24
2) x + 20 = 4
x = 4 - 20
x = -16
4)28:x = -14
28 = -14x
x = -2
5) -5x = -200
x = (-200)/(-5)
x = 40
-13*(x-8) = 0
-13x + 104 = 0
-13x = -104
x = (-104)/(-13)
x = 8
x - (-5) = -10
x + 5 = -10
x = -10 - 5
x = -15
1) 2.5 + a - 3.7 - a = (2.5 - 3.7) + (a - a) = -1.2 + 0 = -1.2
2) -2.5a * 4b * (-)c = (-2.5 * 4) * (a * b) * (-c) = -10ab * (-c) = 10abc
Пошаговое объяснение:
1) х-9=15
х=15+9
х=24
Вiдповiдь: х=24
2) х+20=4
х=4-20
х= -16
Вiдповiдь: х= -16
3) 28:х= -14
28/х= -14
-14=28
х= -2
4) -5х=-200
-5х: (-5)= -200: (-5)
х=40
Вiдповiдь: х=40
5) -
6) х-(-5)= -10
х+5= -10
х= -10-5
х= -15
Вiдповiдь: х= -15
1) 2,5+а-3,7-а
2,5-3,7= - 1,2
Вiдповiдь: - 1,2
2) -2,5a×4b×(-)c
2,5а×4bc= 10abc
Вiдповiдь: 10аbc
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Answers & Comments
Ответ:
1) x - 9 = 15
x = 15 + 9
x = 24
2) x + 20 = 4
x = 4 - 20
x = -16
4)28:x = -14
28 = -14x
x = -2
5) -5x = -200
x = (-200)/(-5)
x = 40
-13*(x-8) = 0
-13x + 104 = 0
-13x = -104
x = (-104)/(-13)
x = 8
x - (-5) = -10
x + 5 = -10
x = -10 - 5
x = -15
1) 2.5 + a - 3.7 - a = (2.5 - 3.7) + (a - a) = -1.2 + 0 = -1.2
2) -2.5a * 4b * (-)c = (-2.5 * 4) * (a * b) * (-c) = -10ab * (-c) = 10abc
Пошаговое объяснение:
Ответ:
1) х-9=15
х=15+9
х=24
Вiдповiдь: х=24
2) х+20=4
х=4-20
х= -16
Вiдповiдь: х= -16
3) 28:х= -14
28/х= -14
-14=28
х= -2
4) -5х=-200
-5х: (-5)= -200: (-5)
х=40
Вiдповiдь: х=40
5) -
6) х-(-5)= -10
х+5= -10
х= -10-5
х= -15
Вiдповiдь: х= -15
1) 2,5+а-3,7-а
2,5-3,7= - 1,2
Вiдповiдь: - 1,2
2) -2,5a×4b×(-)c
2,5а×4bc= 10abc
Вiдповiдь: 10аbc