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Réponse :
Explications étape par étape
a. 2x -2 = 2 <=> 2x = 2+2 <=> 2x = 4 <=> x = 4/2 alors x = 2
b. 3z +10 = -11 <=> 3z = -11 -10 <=> z = -21/3 <=> z = -7
c. 1 - 2y =0 <=> 2y = 1 <=> y = 1/2
d. 2h +1 = 13 <=> 2h = 13-1 <=> h = 12/2 <=> h = 6
e. 7-3e = -32 <=> 3e = 7 +32 <=> e = 39/3 <=> e = 13
f. x/2 = 25 <=> x = 25*2 <=> x= 50 * signifie multiplier
g. -3t = -45 <=> t= -45/(-3) <=> t= 45/3 <=> t= 15
h. t-3/4 = 5/4 <=> t = 5/4 + 3/4 <=> t = 8/4 <=> t = 4
i. 5 + 6z = -11 <=> 6z = -11 -5 <=> z = -16/6 <=> z = -8/3
j. 5x = 3x +3 <=> 5x - 3x = 3 <=> 2x = 3 <=> x = 3/2
k. 7x + 1 = -4 - x <=> 8x = -5 <=> x = -5/8
l. 4x/(-5) = 2 <=> 4x = -10 <=> x = - 10/4 <=> x = -5/2
j'espère avoir aidé