Solve 4(5m + 6) - 8

Question

Solve 4(5m + 6) - 8 <= 336

tkhunny · Answer

Have you considered adding 8 and then dividing by 4?

pinksapphire · Answer

m<=16

tkhunny · Answer

@PinkSapphire Please read the Code of Conduct and heed its wisdom. Right or wrong, that is not an appropriate response.

pinksapphire · Answer

What?

tkhunny · Answer

http://openstudy.com/code-of-conduct

pinksapphire · Answer

Oh okay, thank you...I won't do that again :)

tkhunny · Answer

Lot's of folks can use a willing helper.  Keep contributing!

pinksapphire · Answer

Should I show my work?

tkhunny · Answer

Excellent question!

Always.  Provide explanations and thinking.  We need to teach understanding, not just the art of checking the right box.

pinksapphire · Answer

4(5m+6)-8<=336

(20m+24)-8<=336

20m+16<=336
       -16      -16

20m<=320

20m/20<=320/20

m<=16

tkhunny · Answer

I would have done it a little differently.  My way isn't "better", per se, it just has a little different emphasis.  My rule of thumb is to make the numbers we start with the worst ones we see.

4(5m+6)-8<=336

Add 8

4(5m+6)<=344

Divide by 4

5m+6 <= 86

Subtract 6

5m <= 80

Divide by 5

m <= 16

Unique answers don't care how you find them!  It is a beautiful thing.