exam Maths Puzzle Numerical Ability

5x-1=38
what does x equal

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exam Other Question

In the drawing line AX bisects angle BAC; triangle ABC is isosceles; m(angle BCA)=72 degrees, find BX y=-2x-1
y=3x-16

-2x-1=3x-16
-1=5x-16
15=5x
3=x

y=-2(3)-1
y=-6-5
y=-11