Question

me ajudeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeem

Answer 1

$\frac{4}{8}= \frac{1}{2}=0,5 \\ \frac{15}{5}=3 \\ \frac{0,7}{7}=0,1 \\ \frac{2,5}{5}=0,5 \\ \frac{7x}{8x}= \frac{7}{8}=0,875 \\ \frac{ab}{ab}=1$

$A)\frac{5}{2,5}=\frac{10}{x} \\ x= \frac{25}{5} =5 \\ B) \frac{4}{6}= \frac{x}{x+1} \\ 4x+4=6x \\ 2x=4 \\ x=2 \\ C) \frac{6}{x+45}= \frac{1}{2} \\ 12=x+45 \\ x=-33 \\ D) \frac{x-3}{x}= \frac{4}{5} \\ 5x-15=4x \\ x=15 \\ E) \frac{2x-5}{x-1}= \frac{1}{2} \\ 4x-10=x-1 \\ 3x=9 \\ x=3$

a F) eu nao entendi o primeiro denominador