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A) x = ⁵/₁₃
B) x = 6
Rozwiązania:
A)
0,1(5-3x)=x | *10
5-3x=10x | +3x
5=13x | 13
⁵/₁₃=x
B)
0,3(1-0,4x)=-0,42 | /0,3
1-0,4x=-1,4 | +1,4
2,4-0,4x=0 |+0,4x
2,4 = 0,4x | *0,4
6=x