How do you solve the equation 3x = 9 by multiplying 3 to both sides
2 answers:
Whenever you're stuck with an equation like 3x = 9, you divide both sides by 3 and 3 is your answer. x = 3.
Whenever you see <em>x </em> next to a 3, and it says that it equals 9, you know that 3•3=9.
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7 + 8(2r - 9)
mutiply the bracket by 8
(8)(2r)= 16r
(8)(-9)= -72
7+16r-72
7-72+16r ( rearranging)
answer:
-65+16r or 16r-65
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