Question

nas figuras,calcule x,sabendo que a/b/c​

me ajudem pfv

Answer 1

Resposta:

Explicação passo-a-passo:

A $\frac{3}{4}=\frac{x}{8}\\ \\4x=24\\x=\frac{24}{4}=6$

B ) $\frac{12}{2x-2}=\frac{21}{3x+1}\\ \\36x+12=42x-42\\42+12=42x-36x\\54=6x\\x=\frac{54}{6}=9$

c) $\frac{10}{15}=\frac{3x+1}{5x-2}\\  \\50x-20=45x+15\\50x-45x=15+20\\5x=35\\x=\frac{35}{5}=7$

D) $\frac{x+1}{x-5}=\frac{24}{6}\\  \\6x+6=24x-120\\120+6=24x-6x\\126=18x\\x=\frac{126}{18}=7$