Home > INT3 > Chapter Ch1 > Lesson 1.1.2 > Problem1-28

1-28.

Solve each of the following equations.

1. $3.9x-2.1=$$11.2x+51.7$

Isolate all $x$'s on the same side.

$3.9x-2.1=11.2x+51.7$

$−7.3x−2.1=51.7$

Isolate all constants on the same side.

$−7.3x=53.8$

Divide by the coefficient of $x$.

$x\approx−7.37$

1. $\frac{1}{5}x-2=$$\frac{13}{25}-0.7x$

Notice that both fractions in this problem can be changed to exact decimal values.

$x=2.8$

1. $2+\frac{2}{x}=3$

$2\ +\ ?=3$.
How can the fraction simplify to that?

1. $x+\frac{3}{4}=4+2x$

Refer to the hint from part (b).