Question

What is the value of x in the equation 7x + 2y = 48 , when y = 3?

Answer 1

Plug in 3 for 'y':

7x + 2y = 48

7x + 2(3) = 48

2 * 3 = ?

Answer 2

Can you multiply 2 * 3?

Answer 3

6

Answer 4

Yes, so we have:

7x + 6 = 48

Subtract 6 to both sides, can you do that?

Answer 5

7x = 42

Answer 6

right?

Answer 7

yes

Answer 8

Yep!

Now divide 7 to both sides.

Answer 9

so the answer is 6

Answer 10

Yep!

Answer 11

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