Question

4. Penyelesaian dari soal diatas adalah
A. x = -25
B. x = -15
C. x = 15
D. x = 25​

Answer 1

[tex]\begin{aligned} \sf \frac{1}{3}(x - 1) &= \sf18 - \frac{2}{5}x \\ \sf \frac{x - 1}{3} &= \sf \frac{90 - 2x}{5} \\ \sf 5(x - 1) &= \sf 3(90 - 2x) \\ \sf 5x - 5 &= \sf 270 - 6x \\ \sf 5x + 6x &= \sf 270 + 5 \\ \sf 11x &= \sf 275 \\ \sf x &= \sf \frac{275}{11} \\ \sf x &= \sf 25 \\ \end{aligned}[/tex]

⟨Opsi: D⟩

⌗SDaze ⋆࿐໋₊