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OpenStudy (anonymous):
2d+3=21
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undeadknight26 (undeadknight26):
what you do on one side you do to the other... 2d + 3 = 21 -3 -3 2d = 18 /2 /2 d = 9
OpenStudy (anonymous):
look ! we can have an easier equation ;) : |dw:1384356203378:dw| then what we have ?;) look at this example : |dw:1384356259418:dw|
OpenStudy (anonymous):
And another one : |dw:1384356381836:dw| Got it ?;)
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