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Grade-4
Solve for the Variable - One-Step Subtraction Equation
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Solve the equation for variable I
50 - I = 40
Explanation
50 - I = 40
Add I on both sides we get:
50 - I + I = 40 + I
50 = 40 + I
Now, subtract 40 from both sides
50 – 40 = 40 – 40 + I
10 = I
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