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Ajutor va rog dau coroana

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)




Răspuns :

a. 16s+24-10s-4-4s+14=2s+34
b. 10n-15+12n+6-n-5=21n-14
c. -21d+15+24d-12-4d-20=-d-17
a. 16s+24-2(7s-5) = 16s+24-14s+10=2s+34
b. 10n-15+12n+6-n-5=21n-14
c. 3(d+5) - 4(d+8) = 3d+15-4d-32=-d-17