Solve this equation
y + 4 = 25

y+4=25

We move all terms to the left:

y+4-(25)=0

We add all the numbers together, and all the variables

y-21=0

We move all terms containing y to the left, all other terms to the right

y=21

Subtract 4 from both sides

Step-by-step explanation:

because y is 25 -4 and if you take 4 from the equation on the left you also get y

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