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1.2x+2.6=1.8x 解方程

(1)1.2x+2.6=11 1.2x+2.6-2.6=11-2.6 1.2x=8.4 1.2x÷1.2=8.4÷1.2 x=7 (2)3x+4x=133 (3+4)x=133 7x=133 7x÷7=133÷7 x=19 (3)10x-6.5x=10.5 (10-6.5)x=10.5 3.5x=10.5 3.5x÷3.5=10.5÷3.5 x=3 (4)x+4.9=13.5 x+4.9-4.9=13.5-4.9 x=8.6 (5)3.5x=1403.5x÷3.5=140÷3.5 x=40 (6)x÷1.2=7 x÷1.2*1.2=7*1.2 x=8.4

1.2x-2.4=4x+1.8解:4x-1.2x=-2.4-1.8 2.8x=-4.2 x=-4.2÷2.8 x=1.5

(1)1.2x+2.6=11 1.2x+2.6-2.6=11-2.6 1.2x=8.4 1.2x÷1.2=8.4÷1.2 &nbs

2(x-2.6)=8x-2.6=8/2x-2.6=4x=4+2.6x=6.6

解: 2(x-2.6)=8 则x-2.6=8÷2 则x-2.6=4 则x=2.6+4 则x=6.6

1.2x+3.8x=255x=25 x=5

你好!1.8x=3.78x=3.78/1.8=2.1仅代表个人观点,不喜勿喷,谢谢.

解方程:(2.6-1.8)x=7.20.8x=7.2x=7.2÷0.8x=9

1.2x-x=18加1.8 0.2x=19.8 x=99

1.2X+24=7.6X7.6x-1.2x=246.4x=24x=3.75

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