Respuesta :
If Melanie saves $20 every month and withdrew $60 and found $280 in her account then we have found that he has saved 17 months which is the value of variable.
What is equation?
Equation is relationship between two or more variables expressed in equal to form. Equations of two variables look like ax+by=c. It can be linear , quadratic and cubic equation.
How to form equation?
Melanie saves $20 every month and withdrew $60 for shopping and found $280 in bank account.
let the number of months of saving be x.
Total amount will be as an equation 20x-60
Now put total amount =280
280=20x-60
20x=280+60
20x=340
x=340/20
=17
Hence Melanie has saved money in his bank account for 17 months.
Learnmore about equation at https://brainly.com/question/2972832
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