Question

Resolva as questão abaixo​

Answer 1

a) $\frac{9x-48}{x} =5\\9x-48=5x\\9x=5x+48\\9x-5x=48\\4x=48\\x=\frac{48}{4} \\x=12$

b) $\frac{15-x}{x} =\frac{1}{2} \\30-2x=x\\-2x=x-30\\-2x-x=-30\\-3x=-30\\-x=-\frac{30}{3} \\-x=-10\\x=10$