0,1x + 0,01 (x - 10) = 110,9-x
1x + 1x - 10 = 1109 - 10x
2x - 10 = 1109 - 10x
2x = 1119 - 10x
12x = 1119
x = 1119/12 = 373/4
15x - (8-3x) = 24 + 2x
15x - 8 + 3x = 24 + 2x
18x - 8 = 24 + 2x
18x = 32 + 2x
16x = 32
x = 2
+26367 Could anyone check if these are correct?
2. is correct !
1.
\(\begin{array}{|rcll|} \hline 0.1x + 0.01 (x - 10) &=& 110.9-x \quad | \quad \times 10 \\ 1x + 0.1 (x - 10) &=& 1109-10x \\ x + 0.1x - 1 &=& 1109-10x \\ 10x +x + 0.1x - 1 &=& 1109 \\ 10x +x + 0.1x &=& 1110 \\ 11.1x &=& 1110 \\ \\ x &=& \dfrac{1110}{11.1} \\ \\ \mathbf{x} &=& \mathbf{100} \\ \hline \end{array}\)
