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what value of a makes the equation true? 9 a+2=4a-18
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5 votes
what value of a makes the equation true? 9a+2=4a-18

User Doogal
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5 votes

9a+2=4a-18\ \ \ \ /-2\\\\9a=4a-20\ \ \ \ /-4a\\\\5a=-20\ \ \ \ /:5\\\\a=-4
User Cambecc
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3 votes

9a+2=4a-18 \\9a-4a= -18-2 \\ 5a= -20 |:5 \\a= -4
User Avramov
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