解方程:2x+(50-x)4=126 要步骤啊!

问题描述:

解方程:2x+(50-x)4=126 要步骤啊!


2x+(50-x)4=126
2x+200-4x=126
200-2x=126
200-126=2x
x=74/2
x=37

2x+(50-x)4=126
解: 2X+4 x 50-4X=126(如果有括号的要先去括号,先乘除,后加减)
200-126=2X(把等号左边的数调到等号右边时和右边的数调到左边来,要变号,正数变负数,负数变正数)
74=2X
X=37

2x+(50-x)4=126
2x+200-4x=126
4x-2x=200-126
2x=74
x=37

2x+200-4x=126
-2x=-74
x=37

2x+(50-x)4=126
2x+200-4x=126
4x-2x=200-126
2x=74
x=37希望能够采纳.

2x+200-4x=126
4x-2x=200-126
2x=74
x=37