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Mathematics 19 Online
OpenStudy (anonymous):

Help! with proof

OpenStudy (anonymous):

Statement Reason 1)\[1-\frac{ 2 }{ 3 }(4-5x)=5\] 1)Given 2)3-2(4-5x)=15 2)???????? 3)??????????????? 3)????????? 4)10x-5=15 4)Simplify 5)10x=20 5)Additon postulate 6)x=2 6)division propety

OpenStudy (anonymous):

@e.mccormick @mathstudent55

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

in step 2, you're multiplying every term (outside the parenthesis) by the LCD 3

jimthompson5910 (jim_thompson5910):

this is so you clear out that fraction

jimthompson5910 (jim_thompson5910):

so you're using both the multiplicative property of equality and the distributive property

jimthompson5910 (jim_thompson5910):

in step 3, you'll go from 3-2(4-5x)=15 to 3-8+10x=15 after using the distributive property

OpenStudy (anonymous):

Ok i understand that thanks so much for the help :)

jimthompson5910 (jim_thompson5910):

yw, glad its all clicking

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