Preciso do resultado das equações e delas feitas (por favor) :
A) 5x-20=4x-10
B) 3x+40=10-2x
C) 5x-60=20+x
D) 4x-20=8x-60
A) 5x-20=4x-10
B) 3x+40=10-2x
C) 5x-60=20+x
D) 4x-20=8x-60
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A)
5x - 20 = 4x - 10
5x - 4x = 20 - 10
x = 10
B)
3x + 40 = 10 - 2x
5x = -30
x = - 6
C)
5x - 60 = 20 + x
4x = 80
x = 20
D)
4x - 20 = 8x - 60
- 4x = - 40
x = 10
Abraços!
5x - 4x = - 10 + 20
x = 10
B) 3x + 40= 10 - 2x
3x + 2x = 10 - 40
5x = - 30
x =
x = - 6
C) 5x - 60 = 20 + x
5x - x = 20 + 60
4x = 80
x =
x = 20
D) 4x - 20 = 8x - 60
4x - 8x = - 60 + 20
- 4x = - 40
x =
x = 10