(1)1.34+4/5+0.66
=1.34+0.66+0.8
=2+0.8
=2.8
(2)100÷25+50×15
=4+750
=754
(3)六又五分之一—(3/5+2.4×1/3)÷1/2
=6.2-(0.6+0.8)×2
=6.2-2.8
=3.4
(4)1.5÷3—1.2×0.4
=0.5-0.48
=0.02
(5)1.2+【二又五分之二÷(2—2.4×2/3)】
=1.2+【2.4÷0.4】
=1.2+6
=7.2
(6)10x+2=14x—8
4x=10
x=2.5
(7)14x—11=10x+27
4x=38
x=9.5
(8)0.5X—0.6=0.2x+2.4
0.3x=3
x=10
1.34+4/5+0.66
=1.34+0.8+0.66=2.8
100÷25+50×15=4+750
六又五分之一—(3/5+2.4×1/3)÷1/2=6.2-(0.6+0.8)*2=3.4
1.5÷3—1.2×0.4=0.5-0.48=0.02
1.2+【二又五分之二÷(2—2.4×2/3)】=1.5+(2.4/0.4)=7.2
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