9 by 34 x 100
0.05=−1.9899sin(5t)+2.01sin(4.95t)
5y -y =15
3x -y=5
x^2+3x-10=0
569551÷889
$$\sum_{a}^{b}{C}$$
6x - 10 = 4(x + 3)
2x+3y=13
x^2+y^2=78
Select the number that matches the reason with its statement.
1. АВ + ВС = 4С.