### Home > AC > Chapter 12 > Lesson 12.1.1 > Problem12-6

12-6.

Solve the following equations for $x$.

1. $4x − 6y = 20$

1. $\frac { 1 } { 2 } ( x - 6 ) = 9$

1. $\frac { 4 } { 3 x } + \frac { 6 } { x } = 9$

1. $3 + \sqrt { 5 - x } = 5$

Add 6y to both sides and solve for $x$.

$x = 5 + 1.5y$

Multiply both sides by $2$ first.

$4 + 18 = 27 x$

Subtract 3 from both sides and then square both sides to remove the square root. Solve for $x$.