Mary present age is 7 years while Ed present age is 5 years.
What is an equation?
An equation is an expression that shows the relationship between two or more variables and number.
Let x represent Mary present age and y represent Ed present age, hence:
x = y + 2 (1)
And:
x - 3 = 2(y - 3) (2)
x = 7, y = 5
Mary present age is 7 years while Ed present age is 5 years.
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