Question

Rezolvați ecuațiile:
a) (x+5)+(x-4)=11
b) (x+3)+(x-1)+(x+23)=52
c) [(x+29×2)×3+4]×11=1991
EX. LE VREAU EXPLICATE ! DAU CORONITA! !!! VA ROG AJUTAȚI-MĂ!

Answer 1

a) (x+5)+(x-4)=11
x+5+x-4=11
2x+1=11
2x=11-1
2x=10
x=5

b) (x+3)+(x-1)+(x+23)=52
x+3+x-1+x+23=52
3x+25=52
3x=52-25
3x=27
x=9

c) [(x+29×2)×3+4]×11=1991
(x+58)×3+4=1991:11
(x+58)×3+4=181
(x+58)×3=181-4
(x+58)×3=177
x+58=177:3
x+58=59
x=59-58
x=1