lakiprincess
09.12.2020 •
Mathematics
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Answers on questions: Mathematics
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Ответ:
ewww
Step-by-step explanation:
Ответ:
ok
Step-by-step explanation:
Ответ:
x= 40
Step-by-step explanation:
First of all, we must make an equation. Remember that all triangles sum up to 180 degrees. So, our equation would be: 30+(3x-10)+x= 180
Step 1- Add common variables.
(30-10)+(3x+x)= 180
20+4x= 180
Step 2- Subtract 20 to both sides.
20+4x= 180
-20 -20
4x= 160
Step 3- Divide both sides by 4.
4x= 160
4 4
x= 40
Hope this helps!