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Hello class, today we're going to learn on how to solve a multi-step equation using distributive property, combine like terms, and inverse operation.
15(20+d)=420,So we first multliply 15 and 20 which is 300.Then we multiply 15 and d is 15d so...
Then we write the equation 300 plus 15d since both numbers are postitive, 300+15d=420
Ooh. Then we subtract 300 by itself and by 420 which gives us 120.
Then we divide 120 by the like term, 15d which gives us an answer of d=8
Good job guys!Today you mastered on how to solve these equations
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