Answer:
1.
ST=23
RU=8
SV=5
SU=5+5=10
2.
24x-19=16x+13
24x-16x=13+19
8x=32
x=32/8
x=4
3.
8x-37=5x+17
8x-5x=37+17
3x=54
x=54/3
x=18
4.
4x+19=6x-7
19+7=6x-4x
2x=26
x=26/2
x=13
MN=4×13+19=71
5.
9x-15=7x-1
9x-7x=15-1
2x=14
x=14/2
x=7
CD=7×7-1=48
6.
3x+4=5x-16
16+4=5x-3x
2x=20
x=20/2
x=10
now
JL=3×10+4+5*10-16=68
7.4x+4=7x-17
17+4=7x-4x
3x=21
x=21/3
again
5y-31=2y+5
5y-2y=31+5
3y=36
y=36/3
y=12
now.
PQ:5×12-31=29
QR:2×12+5=24+5=29
PS:4*7+4=32
SR:7*7-17=32
PT:6*7-2*12=18
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