Question 235227
The big important rule for solving equations is:
Whatever you do to one side of the equation, you
must do to the other side.
{{{-8 + 3x - 7x = 48}}}
The next rule is:
Get the unknown on the left side and the
numbers on the right side
------------------------
Add {{{8}}} to both sides
{{{-8 + 3x - 7x = 48}}}
{{{-8 + 8 + 3x - 7x = 48 + 8}}}
{{{3x - 7x = 56}}}
Simplify the left side
{{{-4x = 56}}}
Divide both sides by {{{-4}}}
{{{x = -14}}}
Now check the answer:
{{{-8 + 3x - 7x = 48}}}
{{{-8 + 3*(-14) - 7*(-14) = 48}}}
{{{-8 - 42 + 98 = 48}}}
{{{-50 + 98 = 48}}}
{{{48 = 48}}}
OK