Zad.1. Rozwiąż równania.
a) 2x + 1 = 6 i 1/5
b) 0,4x + 3 = 3 i ¾
c) 1/3 8 ( x - 1 ) = 6
a) 2x+1=6 1/5
2x= 6 1/5-1
2x=5 1/5 |:2
x = 2 3/5
b) 0,4x+3=3 3/4 |*10
4x+30=37,5
4x=37,5-30
4x=7,5 |:4
x=1,875
a) 2x=6i1/5-1
2x=5i4/5
x=2
b)0.4x=3i3/4-3
0.4x=3
x=1i7/8
c)1/3*8x-1=6
2i2/3x=5
x=4/15
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a) 2x+1=6 1/5
2x= 6 1/5-1
2x=5 1/5 |:2
x = 2 3/5
b) 0,4x+3=3 3/4 |*10
4x+30=37,5
4x=37,5-30
4x=7,5 |:4
x=1,875
a) 2x=6i1/5-1
2x=5i4/5
x=2
b)0.4x=3i3/4-3
0.4x=3
x=1i7/8
c)1/3*8x-1=6
2i2/3x=5
x=4/15