Question 25141
I'll quote the question and show the steps underneath that

Take 2x and five and add them together.
2x+5

Divide the result by eight.
{{{((2x+5)/8)}}}

Add 3x.
{{{((2x+5)/8) + 3x}}}

Subtract the quantity eight times 2x.
{{{((2x+5)/8) + 3x -16x}}}

The result is equal to 100 minus 9x.
{{{((2x+5)/8) + 3x -16x = 100 -9x}}}

Simplifying {{{((2x+5)/8) -13x = 100-9x}}}

Multiplying throughout qith 8
{{{2x+5 -104x = 800-72x}}}
Subtracting 5 on both sides
{{{-102x = 795 - 72x}}}
Adding 72x on both sides
{{{-30X = 795}}}
Dividing by -30 throughout
X = -26.5