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受欢迎的代数 >

3x-5(2x+7)=3(4x-1)+52

解答

3 x - 5 (2 x + 7) = 3 (4 x - 1) + 52

解答

x = - \frac{84}{19}

+1

十进制

x = - 4.42105 \dots

求解步骤

3 x - 5 (2 x + 7) = 3 (4 x - 1) + 52

乘开

- 5 (2 x + 7) : - 10 x - 35

3 x - 10 x - 35 = 3 (4 x - 1) + 52

同类项相加:

3 x - 10 x = - 7 x

- 7 x - 35 = 3 (4 x - 1) + 52

展开

3 (4 x - 1) + 52 : 12 x + 49

- 7 x - 35 = 12 x + 49

将

35

到右边

- 7 x = 12 x + 84

将

12 x

para o lado esquerdo

- 19 x = 84

两边除以

- 19

x = - \frac{84}{19}

作图

流行的例子

(175-x)/(35-30)=110

\frac{175 - x}{35 - 30} = 110

0.12(4x-3)=0.3x+8

0.12 (4 x - 3) = 0.3 x + 8

solvefor x,x+y^2+z=15

so l v e f or x, x + y^{2} + z = 15

solvefor b,a=4a-3b

so l v e f or b, a = 4 a - 3 b

(x+4)^3-x^2(x+12)=16

(x + 4)^{3} - x^{2} (x + 12) = 16