x=4
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The variable is x.
It is an equation in one variable, x.
As usual when solving equations, you need to "isolate" the variable, in this case, the variable "x". 4x means 4 times x; if you divide both sides of the equation (the left side and the right side) by 4, you will have achieved this.
4x + 5 = 13. To solve algebraic equations, you need to get the variable by itself on one side of the equation. Start by subtracting 5 from both sides >>> 4x = 8. Then divide both sides by 4 to find what 'x' equals >>> x = 2.
if y=1/4x and x=,find y