解一元一次方程有五步,即去分母、去括号、移项、合并同类项、系数化为1,所有步骤都根据整式和等式的性质进行。
解:解方程,此方程的解为x = 30/13
(2/3)x+(1/5)x = 2
[(2×5)/(3×5)]x + [(1×3)/(5×3)]x = 2
(10/15)x + (3/15)x = 2
(13/15)x = 2
x = 2 ÷ 13/15
x = 2 × 15/13
∴x = 30/13
答:此方程的解为x = 30/13
答案是30/13
你可以看下图片详细步骤
2/3x+1/5x=2
10/15x+3/15x=2
13/15x=2
x=30/13