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4x加x等于7.6怎么算

4x加x=7.6 4x+1=7.6 5x=7.6 5x÷5=7.6÷5 x=1.52

X-1/4X=6/7 解:3/4X=6/7 X=6/7÷3/4 X=6/7×4/3 X=8/7

方程不是没解,而是解为x=-1/4 4x=6-7 4x=-1 x=-1/4

4x=7.6*5 4x=38 x=9.5

12.4x2.54+7.6x2.5 =12.4x2.5+12.4x0.04+7.6x2.5 =(12.4+7.6)x2.5+12.4x0.04 =20x2.5+0.496 =50+0.496 =50.496

解:4x+7=17.6, 4x=10.6 x=2.65 左边=4x+7=4×2.65+7=17.6=右边

34x2.6+7.4x17x2 =34x2.6+7.4x34 =34x(2.6+7.4) =34x10 =340.

7x+6-3x=4x+2x+5x 4x+6=11x 7x=6 x=6/7

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