secret13
secret13
11-02-2015
Mathematics
Answered
Solve a math qs, please?
Answer :
Аноним
Аноним
11-02-2015
[tex]-3=\frac { 3 }{ 4 } r+2\\ \\ -3-2=\frac { 3 }{ 4 } r\\ \\ -5=\frac { 3 }{ 4 } r\\ \\ \frac { 3 }{ 4 } r=\frac { 1 }{ 4 } \cdot 3\cdot r\\ \\ Multiply\quad both\quad \\ sides\quad by\quad 4\\ \\ 4\cdot -5=4\cdot \frac { 1 }{ 4 } \cdot 3\cdot r\\ \\ -20=\frac { 4 }{ 4 } \cdot 3\cdot r\\ \\ -20=3r\\ \\ Divide\quad both\quad sides\\ by\quad 3\\ \\ \frac { -20 }{ 3 } =\frac { 3r }{ 3 } \\ \\ \frac { -20 }{ 3 } =r[/tex]
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