Question

Este URGEEENT! Rezolvați ecuatiile:
a) 5x+3(x-6)=7x+13
b) 6x+4(x-8)=9x+21
c) 5(x-7)-2x=x-41

Answer 1

5x+3x-18=7x+13
8x-18=7x+13
8x-7x=13+18
x=31

b) 6x+4x-32=9x+21
10x-32=9x+21
10x-9x=21+32
x=53

c) 5x-35-2x=x-41
3x-35=x-41
3x-x=-41+35
2x=-6
x=-3

Answer 2

a)5x+3(x-6)=7x+13
5x+3x-18=7x+13
8x-18=7x+13
x-18=13
x=13+18
x=31

b)6x+4(x-8)=9x+21
6x+4x-32=9x+21
10x-32=9x+21
x=21+32
x=53

c)5(x-7)-2x=x-41
5x-35-2x=x-41
3x-35=x-41
2x=35+41
2x=76
x=38