Question

3×/5 - 1/2 = × - 2/5 Ajuda URGENTE!!!!!​

Answer 1

3x/5 - 1/2 = x-2/5

mmc

6x-5/10= 5x-2/5

5. (6x-5)/10=5x-2

corta o 5 com 10

6x-5/2=5x-2

6x-5= 10x-4

-5+4=10x-6x

-1=4x

x=-1/4

Answer 2

Explicação passo-a-passo:

$\frac{3x}{5} - \frac{1}{2} = x - \frac{2}{5} \\ \\ \frac{6x - 5}{10} = \frac{5x - 2}{5} \\ \\ 5.(6x - 5) = 10(5x - 2) \\ \\ 30x - 25 = 50x - 20 \\ \\ 30x - 50x = - 20 + 25 \\ \\ - 20x = 5 \\ \\ x = - \frac{5 \div 5}{20 \div 5} \\ \\ x = - \frac{1}{4}$