LoveOhghost
LoveOhghost LoveOhghost
  • 04-01-2018
  • Mathematics
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Help me please, It's not 20 or 75

Help me please Its not 20 or 75 class=

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Аноним Аноним
  • 04-01-2018
A+B+C+D+E=540°

4X+5+7X+6X+10+5X-5+4X+10=540

26X = 520

X = 520 : 26 = 20°

E = 4X + 10 = 80 + 10 = 90 °


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