Answered

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7(x+4)-ax≡9x+2b
please help​

Sagot :

Modhunter
7x+28-ax=9x+2b
28-2b-ax=9x-7x
28-2b-ax=2x
28-2b=2x+ax
28-2b=x(2+a)
X=28-2b/(2+a)
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