Answer:
Trevor has 16 T-shirts
Step-by-step explanation:
Trevor's shirts (t) + Marisa's shirts(m)= 26
t + m = 26
m= t -6
Replace Marisa's (m ) by t-6 ( 6 fewer than Trevor)
t+ t - 6 = 26
2t - 6= 26
2t= 26+6
t = 32/2
t = 16
Trevor has 16 t-shirts
Marisa has 16 -6 t-shirts= 10
16+ 10 = 26
option 4
3y +4 =5y -10
2y = 14
y = 7
DEF = (3Y+4)× 2 OR (5Y-10) ×2 OR (5Y-10+ 3Y+4)
Def= (3 ×7+4)×2
=50 degree