Chapter 1.2, Problem 6RC

Choose from the column on the right the correct solution of each equation.

$q=\frac{7r}{4},\text{ or }\frac{7}{4}r$

$q=\frac{t-4r}{s}$

$s=4\left(t-q\right)$

$t=s-4$

$r=\frac{4s+t}{7}$

$t=\frac{q-4r}{4}$

CC6. Solve $7r-t=4s$ for r.