bonjour vous pouver les developper puis les reduire : b/13+5(3-x) c/7y+9(y-2) d/6(a+1)+8(3+a) a/2(x.... Pergunta de ideia deNellyfifi

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Nellyfifi @Nellyfifi

April 2019 2 56 Report

bonjour vous pouver les developper puis les reduire :
b/13+5(3-x)
c/7y+9(y-2)
d/6(a+1)+8(3+a)
a/2(x+3)+5

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Commentaires A) $2(x+3)+5 \\ =2x+6+5 \\ =2x+11$

b) $13+5(3-x) \\ =13+15-5x \\ =-5x+28$

c) $7y+9(y-2) \\ =7y+9y-18 \\= 16y-18$

d) $6(a+1)+8(3+a) \\ =6a+6+24+8a \\ =14a+30$

1 votes Thanks 2

babysana23 b/
13+5(3-x)
=13+5*3+5*(-x)
=13+15-5x
=-5x+28

c/
7y+9(y-2)
=7y+9*y+9*(-2)
=7y+9y-18
=16y-18

d/
6(a+1)+8(3+a)
=6*a+6*1+8*3+8*a
=6a+6+24+8a
=14a+30

a/
2(x+3)+5
=2*x+2*3+5
=2x+6+5
=2x+11

voilà :)

1 votes Thanks 1