Question

Am si eu o problema....
1.Rezolvati ecuatile:
a) 5*(3*x-9)=60
b) (23-5*x):9=2
c) 32:(13-5*x)=4
d) 3*x-15:3=19+3

Answer 1

a). 15x-45=60
15x=60+45
15x=105
x=7
b). 23-5x=2x9
23-5x=18
23-18=5x
5=5x
x=1
c).13-5x=32:4
13-5x=8
13-8=5x
5=5x
x=1
d).3x=22+5
3x=27
x=9