<img src="https://tex.z-dn.net/?f=3x%20-%20%285x%20-%209%29%20%3D%207%20-%204%28x%20%2B%201%29" id="TexFormula1" title="3x

icang [17]

3 years ago

- 9) = 7 - 4(x + 1)" alt="3x - (5x - 9) = 7 - 4(x + 1)" align="absmiddle" class="latex-formula">

Mathematics

1 answer:

Montano1993 [528]3 years ago

8 0

$3x-(5x-9)=7-4(x+1)\\\\3x-5x+9=7-4x-4\\\\-2x+9=-4x+3\ \ \ \ |-9\\\\-2x=-4x-6\ \ \ \ |+4x\\\\2x=-6\ \ \ \ |:2\\\\x=-3$

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