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Bonjour, question de maths en seconde. a. 4(1-x)+(3x+1) b. 3(2x-5)-2(x-1) c. 3(3x-2)-(2-x) d. -4(x-2)+3(2x+1) e. 3(2x-2)-3(2-3x) Merci bonne soirée.

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bonjour

a. 4(1-x)+(3 x+1)

 =    4 - 4 x + 3 x + 1

 = - x + 5

b. 3(2 x-5)-2(x-1)

=  6 x - 15 - 2 x + 2

= 4 x - 13

c. 3(3 x-2)-(2-x)

 = 9 x - 6 - 2 + x

 = 10 x - 8

d. -4(x-2)+3(2 x+1)

 = - 4 x + 8 + 6 x + 3

 =  2 x + 11

e. 3(2 x-2)-3(2-3 x)

  = 6 x - 6 -  6 +  9 x

  =  15 x - 12

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