Ответ:
a) 4х + 59 = 8х +15
4x - 8x = 15 - 59
-4x = -44
x = -44 : (-4)
x = 11
с) 10x +1 = 12x-17
10x - 12x = -17 -1
-2x = -18
x = -18 : (-2)
x = 9
e) 16-х = х- 20
-x - x = -20 - 16
-2x = -36
x = -36 : (-2)
x = 18
g) 7- 2x = 3х - 3
-2x -3x = -3 -7
-5x = -10
x = -10 : (-5)
x = 2
i) 5+16y = 3 +14у
16y -14y = 3-5
2y = -2
y = -2 : 2
y = -1
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Ответ:
a) 4х + 59 = 8х +15
4x - 8x = 15 - 59
-4x = -44
x = -44 : (-4)
x = 11
с) 10x +1 = 12x-17
10x - 12x = -17 -1
-2x = -18
x = -18 : (-2)
x = 9
e) 16-х = х- 20
-x - x = -20 - 16
-2x = -36
x = -36 : (-2)
x = 18
g) 7- 2x = 3х - 3
-2x -3x = -3 -7
-5x = -10
x = -10 : (-5)
x = 2
i) 5+16y = 3 +14у
16y -14y = 3-5
2y = -2
y = -2 : 2
y = -1