Question

What’s is 5x/2 + 3 = 1/7

Answer 1

For this case we must solve the following equation:

$\frac {5x} {2} + 3 = \frac {1} {7}$

We subtract 3 from both sides of the equation:

$\frac {5x} {2} = \frac {1} {7} -3\\\frac {5x} {2} = \frac {1-21} {7}\\\frac {5x} {2} = \frac {-20} {7}\\\frac {5x} {2} = - \frac {20} {7}$

We multiply by 2 both sides of the equation:

$5x = - \frac {40} {7}$

We divide by 5 on both sides of the equation:

$x = - \frac {40} {7 * 5}\\x = - \frac {8} {7}$

Answer:

The solution is: $x = - \frac {8} {7}$