Question

1. Find the value of x when: 7/5 = x/3

Answer 1

The expression given is:

`(7)/(5)=(x)/(3)`

And we need to find the value of x.

To solve for x, we need to have the variable x alone on one side of the equation, for this, we multiply both sides of the equation by 3:

`3((7)/(5))=3((x)/(3))`

Solving the left-hand side we have to multiply 3 times 7 and divide that by 5. Since 3*7 is equal to 21:

`(21)/(5)=3((x)/(3))`

Continuing with the left-hand side, the division of 21/5 is equal to 4.2:

`4.2=3((x)/(3))`

Finally, solving the right-hand side, we note that 3/3 is 1, thus, we will only be left with x:

`4.2=x`

The value of x is 4.2.

Answer:

x = 4.2