Question

Calculați
a)8(2s+3)-2(5s+2+2s-7)
b)5(2n-3)+3(4n+2)-(n+5)
c)3(-7d+5+8d)-4(3+d+5)
d)7(y-1)-3(2y+3)+2(3y+1)
f)2(7 p +1)+(3+2p-1)+5(p-10)
g)3(10m-20-7m-12m)+4m

Ajutor va rog dau coroana

Answer 1

a) 8(2s+3)-2(5s+2+2s-7) =
16s+24-2(7s-5) =
16s +24-14s+10 =
2s+34.

b) 5(2n-3)+3(4n+2)-(n+5) =
10n-15+12n+6-n-5 =
21n-20.

c) 3(-7d+5+8d)-4(3+d+5) =
3(d+5)-4(8+d) =
3d+15-32-4d =
-d-17.

d) 7(y-1)-3(2y+3)+2(3y+1) =
7y-7-6y-9+6y+2 =
7y-14.

f) 2(7p+1)+(3+2p-1)+5(p-10) =
14p+2+(2+2p)+5p-50 =
14p+2+2+2p+5p-50 =
19p-44.

g) 3(10m-20-7m-12m)+4m =
3(10m-20-19m)+4m =
3(-20-9m)+4m =
-60-27m+4m =
-60-23m.



Sper că te-am ajutat :)

Answer 2

16s+24 -10s-4-4s+14= 2s+34=2(s+17)
10n-15+12n-n-5=21n-20
-21d+15+24d-12-4d-20=-d-17
7y-7-6y-9+6y+2=7y-14=7(y-2)
17p+2 +2+2p+5p-10=24p-6=6(4p-1)
3(-9m-20)+4m=-27m-60+4m=-23m-60.