Question

Va rog sa imi spuneti cum se rezolva urmatoarele ecuatii:
1)(2x+3x);5=7
2)(45x=27x):36=4
3)[25(36x-11x)]:125=500
4)(12x):4=30
5)(3x=7x):2=15
6)3(132x-50x):41=60
7)[8(2x=7x)-2x]:7=1000
8)[2(345x=55x)]:4=1000

Answer 1

4)12x:4=30
12x=30*4
12x=120
x=10
5)3x+7x:2=15
10x:2=15
10x=15*2
10x=30
x=30:10
x=3