a) 14x- 5(0,3x+ 1,5)= 3(1,5- 0,5x)+ 2
b) 1,3(5x+ 2)- 4(2-0,1x)= 1,5
c) \frac{x+3}{5} + \frac{4x+1}{2} = \frac{2}{15}
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a)
b)
c)
a) 14x- 5(0,3x+ 1,5)= 3(1,5- 0,5x)+ 2
14x-1,5x-7,5=4,5-1,5x+2
14x-1,5x+1,5x=4,5+2+7,5
14x=14 /:14
x=1
b) 1,3(5x+ 2)- 4(2-0,1x)= 1,5
6,5x+2,6-8+0,4=1,5
6,5x=1,5-2,6+8-0,4
6,5x= 6,5 /:6,5
x=1
c) \frac{x+3}{5} + \frac{4x+1}{2} = \frac{2}{15}
(x+3)/5+(4x+1)/2=2/15 / *30
30(x+3)/5+30(4x+1)/2=30* 2/15
6(x+3)+15(4x+1)=2*2
6x+18+60x+15=4
6x+60x=4-18-15
66x=-29 / :66
x= -29/66