Question 13438
Solve for x:

{{{2.1x + 45.2 = 3.2 - 8.4x}}} Add 8.4x to both sides.
{{{10.5x + 45.2 = 3.2}}} Subtract 45.2 from both sides.
{{{10.5x = - 42}}} Divide both sides by 10.5
{{{x = -4}}}

Check: Substitute -4 for x in the original equation.

{{{2.1(-4) + 45.2 = 3.2 - 8.4(-4)}}}
{{{-8.4 + 45.2 = 3.2 + 33.6}}}
{{{36.8 = 36.8}}} Ok