Question

determinati a∈ R pentru care enunturile de mai jos devin propozitii adevarate

a).Ecuatia x+m=2x+3 are solutia 1
b).ecuatia mx-3x+2=5+x are solutia 3
c).ecuatia 2(x+m)+3x-3=mx+x+2 are solutia -1
d).ecuatia 3x+2m-2(x+m)=mx+2m+4x are solutia -3

chiar am nevoie de ajutor

Answer 1

a) x+m=2x+3 are solutia 1 
1+m=2+3
1+m=5
m=5 - 1
m=4
b) mx-3x+2=5+x are solutia 3
3m - 9+2=5+3
3m - 7=8
3m=8+7
3m=15
m=15/3=5
c)  2(x+m)+3x-3=mx+x+2 are solutia -1
- 2+2m-3-3=-m-1+2
2m - 8 = - m +1
2m+m=1+8
3m=9m=9/3=3

Sper că te-am ajutat!