Question

× + 20 + 2× = 10 - 2× - 15

Answer 1

The answer is -5

Explanation:

`\mathrm{Group\:like\:terms}\\x+2x+20=10-2x-15`

`\mathrm{Add\:similar\:elements:}\:x+2x=3x\\3x+20=10-2x-15`

`\mathrm{Group\:like\:terms}\\3x+20=-2x+10-15`

`\mathrm{Add/Subtract\:the\:numbers:}\:10-15=-5\\3x+20=-2x-5`

`\mathrm{Subtract\:}20\mathrm{\:from\:both\:sides}\\3x+20-20=-2x-5-20`

`\mathrm{Simplify}\\3x=-2x-25`

`\mathrm{Add\:}2x\mathrm{\:to\:both\:sides}\\3x+2x=-2x-25+2x`

`\mathrm{Simplify}\\5x=-25`

`\mathrm{Divide\:both\:sides\:by\:}5\\(5x)/(5)=(-25)/(5)`

`\mathrm{Simplify}\\x=-5`

Hope this helps you greatly!

Have a great afternoon!