Respuesta :

zainab5990

Answer:

Step-by-step explanation:

for first one's answer visit;

https://answers.everydaycalculation.com/subtract-fractions/2-3-minus-7-18

for sencond one;

3x=2+1

3x=3

x=1

for more info visit;

https://www.cymath.com/answer?q=3x-1%3D2