Question

2(х+1,2)=2,7-х б)79х-518х=-3

Answer 1

2(x+1,2)=2,7-x
2x+2,4=2,7-x
2x+x=2,7-2,4
3x=0,1
x=0,1

(7/9x)2- 5/18x=-3
14/18x-5/18x=-3
9/18x=-3
0,5x=-3
x=-6