Question

Solve for y:-

78 + y = 523

y = ?

Thank you so much! :)

Answer 1

To solve for y we need to use d INVERSE OPERATION of addition which is subtraction. Then we will check our work:-

Lets do it:-

78 + y = 523
523 - 78 = 445
y = 445

CHECK OUR WORK:-

78 + y = 523
y = 445
78 + 445 = 523
We were RIGHT!!

So, y = 445

Hope I helped ya!! xD

Answer 2

78 + y = 523

Now, first lets start out by applying the inverse operation to isolate the variable.

78 + y = 523
-78 -78 ⇒ Inverse operation

523 - 78 = 445

y = 445 ⇒ We have our value for y

CHECK OUR WORK:-

78 + 445 = 523
523 = 523

Our answer is correct.