so im to solve, and state assumptions on x.
i am i on the correct track?
suki, you are certainly on the right track, with a correct final solution,
and you were shown how your solution checks. Let me write a slight
redo with certain equals signs that do not belong. Also, let me
address the "assumptions on x" you mentioned.
4x+27 + 2−3x3 = 0
7(2−3x) + 3(4x+2) = 0
14−21x+12x+6 = 0
−9x+20 = 0
9x = 20
x = 920
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For the fractions in the first line, neither denominator may equal zero.
We can find out restrictions on x by stating each denominator is not
equal to zero and solve that respective nonequation:
4x+2=0
4x=−2
x=2−1
Also,
2−3x=0
−3x=−2
x=32
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Notice how the solution of
x = 920 is different from either of
these two restricted values.