Answer:
Step-by-step explanation:
TS = 4x - 7
x = -7/4
SV = 5x -15
x = -15/5
= -3
TV = -7/4 + -3
= -3 3/4
= -4.75
8.4
50 ÷ 25 = 2
(2)2 x 7 x 0.3
4 x 2.1
= 8.4