Vertically opposite angles are equal
So, 11x + 33 will equal 15x+5
11x + 33 = 15x + 5
-11x both sides
33 = 4x + 5
- 5 both sides
28 = 4x
รท4
7 = x
Check:
11 x7 = 77 + 33 is 110
15 x 7 = 105 +5 = 110
Ans: x = 7
Hope this helps!
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