add the rational expressions:

3x/x-1 + 4/7x

i want to completely understand so give a step by step!

usually if it comes to worse, we can always just use the product of all denominators as the LCD, it will just be a CD but not LCD but as good, but usually  we try to use the LCD.

in this case our denominators do not have a GCF, so the LCD will just be their product, so we'll use that.

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12