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Question

Which of the following is/are two step equations?

A
x+3=6
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B
5x10=0
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C
x=8
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D
x24=3
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Solution

The correct option is D x24=3
(A) x+3=6
Subtract both the sides by 3
x+33=63x=3
It took only one step to solve the equation. So, it is an one step equation.

(B) 5x10=0
Add both the sides by 10
5x10+10=0+105x=10
Divide both the sides by 5
5x5=105
x=2
It took two steps to solve the equation. So, it is a two step equation.

(C) x=8
This equation is already solved for x.

(D) x24=3
Add both the sides by 4
x24+4=3+4x2=7
Multiply both the sides by 2
x2×2=7×2
x=14
It took two steps to solve the equation. So, it is a two step equation.

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