### Home > GB8I > Chapter 4 Unit 5 > Lesson INT1: 4.1.1 > Problem4-8

4-8.

Solve the equations below by first rewriting each equation as a simpler, equivalent equation. Check your solutions.

1. $200 x + 50 = 8000$

• Subtract 50 from both side of the equation.

1. $\quad \frac { 21 } { 4 x } + \frac { 9 } { 8 } = 2$

• Multiply both sides by the Least Common Multiple
(the Fraction Buster) of $4x$ and $8$.

• Multiply every term by $8x$.

• $42 + 9x = 16x$

$42 = 7x$

$x = 6$