Answer:
x = 7
Explanation:
x + 16 = 4x - 5
16 + 5 = 4x - x
21 = 3x
21/3 = x
x+16=4x-5. {being vertically opposite angle}
16+5=4x-x
21=3x
or, 21/3=x
hence, x=7
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