je doit faire le numero d de l'exercice 4merci

a) 4t-3 = -10t +4

4t +10t = 7

14t = 7

t = 7/14 = 0.5

b) y+1= -3y+4

4y = 5

y = 5/4

c) (5-2x)/4= 3x-1

5/4+1 = 2x+3x

9/4 = 5x

(9/4)/5 = x

d) 2/5+t = 1/4t + 1

2/5 - 1 = -3/4t

 3/5 = 3/4t

2.4 = 3t

24/30 = t