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3 years ago

× + 20 + 2× = 10 - 2× - 15

Mathematics

1 answer:

OlgaM077 [116]3 years ago

6 0

Answer:

The answer is -5

Step-by-step explanation:

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

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

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

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

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

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

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

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

$\mathrm{Divide\:both\:sides\:by\:}5\\\frac{5x}{5}=\frac{-25}{5}$

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

Hope this helps you greatly!

Have a great afternoon!

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