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受欢迎的代数 >

(x+3)/4+(5(7x+9))/3 =(3(4x+3))/(12)-7/2

解答

\frac{x + 3}{4} + \frac{5 ( 7 x + 9 )}{3} = \frac{3 ( 4 x + 3 )}{12} - \frac{7}{2}

解答

x = - \frac{222}{131}

+1

十进制

x = - 1.69465 \dots

求解步骤

\frac{x + 3}{4} + \frac{5 ( 7 x + 9 )}{3} = \frac{3 ( 4 x + 3 )}{12} - \frac{7}{2}

消掉

\frac{3 ( 4 x + 3 )}{12} : \frac{4 x + 3}{4}

\frac{x + 3}{4} + \frac{5 ( 7 x + 9 )}{3} = \frac{4 x + 3}{4} - \frac{7}{2}

乘以最小公倍数

3 (x + 3) + 20 (7 x + 9) = 3 (4 x + 3) - 42

展开

3 (x + 3) + 20 (7 x + 9) : 143 x + 189

展开

3 (4 x + 3) - 42 : 12 x - 33

143 x + 189 = 12 x - 33

将

189

到右边

143 x = 12 x - 222

将

12 x

para o lado esquerdo

131 x = - 222

两边除以

131

x = - \frac{222}{131}

作图

流行的例子

\frac{x}{4} = \frac{15}{20}

4 = 4 (5 w - 8) - 8 w

4 x + 5 = - 2 x + 5

solvefor c,25c+150m+500p=5000

so l v e f or c, 25 c + 150 m + 500 p = 5000

\frac{3 x}{2} + 2 = 3 x - 2