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Mathematics 7 Online
OpenStudy (anonymous):

4(x - 3) = 32

OpenStudy (saifoo.khan):

x - 3 = 8

OpenStudy (anonymous):

Use the distributive property first. a(b - c) = ab - ac

OpenStudy (saifoo.khan):

x = 8 + 3 x = 11

OpenStudy (saifoo.khan):

there is a shortcut. divide 32 by 4. this is easy & short.

OpenStudy (anonymous):

Yes, that does work. They will not always work out this way. Good to know both.

OpenStudy (saifoo.khan):

Yeas, u got a point too! :)

OpenStudy (anonymous):

so x=11?

OpenStudy (saifoo.khan):

Yeas!

OpenStudy (anonymous):

You can substitute 11 back into the original equation to see if it makes the equation true. You never need to ask if the answer is correct because there is a way to check it!

OpenStudy (anonymous):

4(11 - 3) = 4(8) = 32 So 11 works.

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