3x-1=2
3x = 2 + 1
3x = 3 /:3
x = 1
5x+4=-7
5x = -7 - 4
5x = -11 /:5
x = - 2,2
a)
3x=2+1
3x=3
x=1
b)
5x=-7-4
5x=-11
x= -11/5 czyli -2,2
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3x-1=2
3x = 2 + 1
3x = 3 /:3
x = 1
5x+4=-7
5x = -7 - 4
5x = -11 /:5
x = - 2,2
a)
3x-1=2
3x=2+1
3x=3
x=1
b)
5x+4=-7
5x=-7-4
5x=-11
x= -11/5 czyli -2,2