tolong pake carayttt

[tex] \frac{a}{b} = \frac{5x}{4x} \\ a + b= 5x + 4x = 9x \\ a + b = 126 \\ 9x = 126 \\ x = 126 \div 9 = 14 \\ b = 4x = 4 \times 14 = 56[/tex]