Question

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

Answer 1

The expression given is:

$\frac{7}{5}=\frac{x}{3}$

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:

$3(\frac{7}{5})=3(\frac{x}{3})$

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

$\frac{21}{5}=3(\frac{x}{3})$

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

$4.2=3(\frac{x}{3})$

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