Question

I'm confused with this... I'll send a screenshot.

Answer 1

How is there something to end with- If theres nothing to begin with

Answer 2

Your teacher wants you to get y by itself.

To do that, you need to somehow undo that "minus 20"

What can you do to both sides to move that 20 over?

Answer 3

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jimthompson5910
Your teacher wants you to get y by itself.

To do that, you need to somehow undo that "minus 20"

What can you do to both sides to move that 20 over?
\(\color{#0cbb34}{\text{End of Quote}}\)
Uhhh- Idk I'm not good at math unless its fractions or integers

Answer 4

Let's say the equation was
y-20 = 30

We can isolate y by adding 20 to both sides
y-20 = 30
y-20+20 = 30+20
y = 50

The same idea applies to the equation you were given
y-20 = b
y-20+20 = b+20
y = b+20
The big difference is that we cannot simplify b+20 to some single number. We can only do this if we knew the value of b (though we don't at the moment).

Answer 5

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jimthompson5910
Let's say the equation was
y-20 = 30

We can isolate y by adding 20 to both sides
y-20 = 30
y-20+20 = 30+20
y = 50

The same idea applies to the equation you were given
y-20 = b
y-20+20 = b+20
y = b+20
The big difference is that we cannot simplify b+20 to some single number. We can only do this if we knew the value of b (though we don't at the moment).
\(\color{#0cbb34}{\text{End of Quote}}\)
Exactly my point..-

Answer 6

add 20 to both sides

Answer 7

These 20s cancel out

Answer 8

So that's how we end up with the answer of y = b+20

Answer 9

Oh.....-

Answer 10

Thanks ;-;

Answer 11

No problem