jalilaalyahumuz jalilaalyahumuz

03-11-2018
Mathematics

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can someone show me what i did wrong? x is supposed to equal 2

can someone show me what i did wrong x is supposed to equal 2 class=

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greggune greggune

03-11-2018

In step 3, you added 8x onto the other side instead of subtracting it from 15x.

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jdoe0001 jdoe0001

03-11-2018

[tex]\bf \begin{array}{rllll} 3(5x-4)&=&8x+2\\\\ 15x-12&=&8x+2\\\\ 7x-12&=&2&\leftarrow \textit{notice here}\\\\ 7x&=&14\\[1em] x&=&\cfrac{14}{7}\\[1em] x&=&2 \end{array}[/tex]

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