Answer:
12x+4=13x-5
9=13x-12x
X=9
Step-by-step explanation:
Plug in 2 for x. f(20=2-51 = -49
1
Set up the long division.
648|9
2
Calculate 900 ÷ 648, which is 1 with a remainder of 252.
0.01648|9.6.482.52
3
Bring down 0, so that 2520 is large enough to be divided by 648.
0.01648|9.6.482.520
4
Calculate 2520 ÷ 648, which is 3 with a remainder of 576.
0.013648|9.6.482.5201.944576
5
Bring down 0, so that 5760 is large enough to be divided by 648.
0.013648|9.6.482.5201.9445760
6
Calculate 5760 ÷ 648, which is 8 with a remainder of 576.
0.0138648|9.6.482.5201.94457605184576
7
Therefore, 9 ÷ 648 ≈ 0.0138.
0.01380.0138
B because 5divided by 5 =1 and 15 divided by 5=3 which would be 1/3 and 1/3 is the opposite or -1/3