Question

rezolva ecuatia:
a.9*(x-7)=-63
b.2*(-x+4)=-3*(x+1)+23
c.2*(x+6)-(5-3*x)=2*(-x+9)+3
d.5*(x+3)=3*(x-5)
e.1-2*[3-(4-x)]=-7
f.225/(x-3)=-15
VA ROG FRUMOS

Answer 1

a)9*(×-7)=-63

×=7=-7;

b)2*(-×+4)=-3*(×+1)+23=

x=-2x+8=-3x-3+23

x=2x+3x=20-8

x=12

c)e ok???