How do you solve x43+9=25?

1 Answer
Jan 9, 2016

x=8

Explanation:

Firstly, we rearrange the equation so that there will only be equation with one unknown on one side while integer on the other side.

So,
x43+9=25

x43=259

x43=16

To eliminate the power on unknown x, we need to whether add to the power of or to the power root of on both side of the equation. For example;

x43=16 also equals to 3x4=16

Let say we want to eliminate the power root of 3 on x, we must add to the power of 3 onto both side of equation;

x43=16
Add to the power of 3 on both side of equation;

x(43)(3)=163

x4=4096

Let say then we want to eliminate the power of 4 on x, we must add to the power root of 4 onto both side of equation;

x4=4096
Add to the power root of 4 on both side of equation;

x(4)(14)=409614

x=8