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Can i have help with this pls, no one will teach me it

Can i have help with this pls, no one will teach me it-example-1
User Ali Seymen
by
6.6k points

1 Answer

5 votes

Answer:

x = 21

Explanation:

As stated in the hint: When angles form a linear pair, their sum is 180° in other words, these are supplementary angles:

3x + 18 + 4x + 15 = 180 add like terms

7x + 33 = 180 subtract 33 from both sides

7x = 147 divide both sides by 7

x = 21

User Martin Drautzburg
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6.1k points