б)х*2-10=3, т.е. 2х-10=3
2х-10=4
2х=4+10
2х=14
х=14:2
х=7
в)(х+5)*2/3=4,т.е. 2/3 * (х+5)=4
2/3(х+5)=4
х+5=4:2/3
х+5=12/2=6
х=6-5
х=1
б)х*2-10=3, т.е. 2х-10=3
2х-10=4
2х=4+10
2х=14
х=14:2
х=7
в)(х+5)*2/3=4,т.е. 2/3 * (х+5)=4
2/3(х+5)=4
х+5=4:2/3
х+5=12/2=6
х=6-5
х=1