7p+5t
3t - 1
2t^2+5t-3=0 (2t-1)(t+3)=0 2t-1=0 and t+3=0 t=.5 and t=-3
R = S + 2T S = 3T .... substitute R = (3T) + 2T R = 5T
3r + 3r + 2t = 6r + 2t
2t-4s
7p+5t
3t - 1
5t + 2 = 3t - 2t + 5 Collect like terms 5t - 3t + 2t = 5 - 2 4t = 3 t = ¾ Check: 5 x 3/4 = 3¾ + 2 = 5¾; 3x¾- 2x¾ + 5 = 5¾ QED
2t-5t=-3t
7 +5t
2t^2+5t-3=0 (2t-1)(t+3)=0 2t-1=0 and t+3=0 t=.5 and t=-3
5t
R = S + 2T S = 3T .... substitute R = (3T) + 2T R = 5T
-5t + 9 + 2t = 30Combine like terms on the left side:-3t + 9 = 30Multiply both sides by -1"3t - 9 = -30Add 9 to both sides:3t = -21Divide both sides by 3:t = -7
6t - 5t - 6 = (3t + 2)(2t - 3)
R = s + 2t; s = 3tR = 3t + 2tR = 5t