The error is in the second step they subtracted 3 from both sides but it was a 3x, which you can not do.
Correction.
9x+18+3x=1
12x+18=1
12x=-17
x=-17/12
<span> £536,521.
</span>6,521.
6,000
the thousands place
The first one would be 5 and the second is 3 thanks and mark as brainiliest
The answer is C. Once you add the like terms x^2 and 4x^2 you get your answer.
