3 years ago

Solve for x= 4x+18°+5x°=90°

1 answer:

8 0

Answer: x = 8

Step-by-step explanation:

4x + 18 + 5x = 90

9x + 18 = 90 Added like terms

9x = 72 Subtracted 18 from both sides

x = 8 Divided both sides by 9

BONUS: The sum of these two angles is 90°, which means these angle are complementary.

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