①1.1x+x=6.3②0.35+x=13.5③0.7*(x+5)=3.5④(12-5.5)x=65⑤12*(x+0.9)=24⑥(23+x)/4=6.532+5+x=4877-5x=2

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①1.1x+x=6.3②0.35+x=13.5③0.7*(x+5)=3.5④(12-5.5)x=65⑤12*(x+0.9)=24⑥(23+x)/4=6.532+5+x=4877-5x=2
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①1.1x+x=6.3②0.35+x=13.5③0.7*(x+5)=3.5④(12-5.5)x=65⑤12*(x+0.9)=24⑥(23+x)/4=6.532+5+x=4877-5x=2
①1.1x+x=6.3
②0.35+x=13.5
③0.7*(x+5)=3.5
④(12-5.5)x=65
⑤12*(x+0.9)=24
⑥(23+x)/4=6.5
32+5+x=48
77-5x=2

①1.1x+x=6.3②0.35+x=13.5③0.7*(x+5)=3.5④(12-5.5)x=65⑤12*(x+0.9)=24⑥(23+x)/4=6.532+5+x=4877-5x=2
(1)1.1x+x=6.3; 合拼同类项,2.1x=6.3,x=3;
(2)0.35+x=13.5,移项 x=13.5-0.35=13.15;
(3)0.7*(x+5)=3.5,方程两边同时除以0.7,x+5=5,移项,x=0;
(4)(12-5.5)x=65,先算括号里的,6.5x=65,x=100;
(5)12x(x+0.9)=24,方程两边除以12,x+0.9=2,移项 x=1.1;
(6)(23+x)/4=6.5,方程两边同时乘以4,得23+x=26,移项 x=3;
(7) 32+5+x=48; 合拼同类项并移项,x=11;
(8) 77+5x=2,移项,x=-15.

① (1.1+1)x=6.3
2.1x=6.3
x=6.3÷2.1=3
② x=13.5-0.35=13.15
③ x+5=3.5÷0.7=5
x=5-5=0
④12-5.5=6.5
原式=6.5x=65
x=65÷6.5=10
⑤x+0.9=24÷12=2
x2-0.9=1...

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① (1.1+1)x=6.3
2.1x=6.3
x=6.3÷2.1=3
② x=13.5-0.35=13.15
③ x+5=3.5÷0.7=5
x=5-5=0
④12-5.5=6.5
原式=6.5x=65
x=65÷6.5=10
⑤x+0.9=24÷12=2
x2-0.9=1.1
⑥23+x=6.5*4=26
x=26-23=3
⑦x=48-32-5=16-5=11
⑧77-5x=2
77-2=5x
5x=75
x=75÷5=15

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①x=3 ②x=10 ③x=0