Question

14 Dacă A = 5x - 4,B=-3x + 6, C = -y + 2x + 7 și D = - 4x + y -2, calculati: a) A+B; b) A+C-B; c) A-B+C-D; d) A+D+ (C-B).​

Answer 1

Răspuns:

a)A+B=5x-4+3x+6=2(4x+1)

b)A+C-B=5x+-y+2x+7-3x+6=4x-y+13

c)A-B+C-D=5x-4-3x+6-3x+6+-y+2x7--4x+y-2=-5x+20+2y

d)A+D+(C-B)=5x-4+-4+y-2+(-y+2x+7-3x+6)=4x+11

sper ca e ok:)♡