Question

Given that R=6x+5y

Answer 1

Given that the expression is $R=6x+5y$

We need to determine the value of y when $x=7$ and $R=18$

Value of y:

The value of y can be determined by substituting $x=7$ and $R=18$

Hence, substituting the values in the expression, we get;

$18=6(7)+5y$

Simplifying the expression, we get;

$18=42+5y$

Subtracting both sides by 42, we have;

$18-42=5y$

    $-24=5y$

Dividing both sides by 5, we get;

$-\frac{24}{5}=y$

Thus, the value of y is $-\frac{24}{5}$