Question

Rezolvati ecuatiile:
b)2,5y-4=5y+2,4
c)3z+4=3-2z
d)√2-7x=2x-2√2?

Answer 1

b) 2,5y-4=5y+2,4
2,5y-5y=2,4+4
-2,5y=6,4
y=-6,4/2,5
y=-2,56
c) 3z+4=3-2z
3z+2z=3-4
5z=-1
z=-1/5
z=-0,2
d)  √2-7x=2x-2√2
-7x-2x=-2√2-√2
-9x=-√2
x=-√2/9