An alternative solution to the one given is as follows
2x (2 + 7) = 9 given equation
2x (9) = 9 combine terms inside parentheses (only if they're like terms!)
18x = 9 because 2x * 9 is 18x
x=1/2 divide both sides by 18
Hope this helps as well!
2 Answers By Expert Tutors
BRIAN W. answered • 02/13/24
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Effective Math tutor specializing in Algebra and Calculus.
2x(2+7)=9
4x + 14x = 9
Then add like terms,
18x = 9
Then divide by 18 on both sides,
x = 1/2
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