X+3X=28,怎么算了?忘了

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X+3X=28,怎么算了?忘了X+3X=28,怎么算了?忘了X+3X=28,怎么算了?忘了X+3X=284x=28x=7X+3X=284X=28X=28÷4X=74X=28X=28/4=7x=7解x+

X+3X=28,怎么算了?忘了
X+3X=28,怎么算了?忘了

X+3X=28,怎么算了?忘了
X+3X=28
4x=28
x=7

X+3X=28
4X=28
X=28÷4
X=7

4X=28
X=28/4=7

x=7

解 x+3x=28
4x=28
x=28÷4
x=7

（1+3）X=28
4x =28
x =28*4
x =7

x+3x=28
1x+3x=28
4x=28
x=28除以4
x=7