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Nataly_w [17]
3 years ago
8

How to solve 0.5(5-7x)=8-(4x+6)

Mathematics
1 answer:
Yuri [45]3 years ago
3 0
\frac { 1 }{ 2 } \left( 5-7x \right) =8-\left( 4x+6 \right) \\ \\ \frac { 1 }{ 2 } \left( 5-7x \right) =8-4x-6

\\ \\ \frac { 1 }{ 2 } \left( 5-7x \right) =2-4x\\ \\ \frac { 1 }{ 2 } \left( 5-7x \right) =2\left( 1-2x \right) \\ \\ 2\cdot \frac { 1 }{ 2 } \left( 5-7x \right) =2\cdot 2\left( 1-2x \right)

\\ \\ 5-7x=4\left( 1-2x \right) \\ \\ 5-7x=4-8x\\ \\ -7x+8x=4-5\\ \\ x=-1
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