=2-514×214+78
=2-158+78
=1
(2)4x+2(8-x)=36
4x+16-2x=36
2x+16=36
2x+16-16 = 36-16
2x=20
2x \2 = 20 \2
x=10
(3)14x+13x=14
712x=14
712x×127 = 14×127
x=24