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受欢迎的代数 >

7m+4(m+3)=5m+6(2m-1)

解答

7 m + 4 (m + 3) = 5 m + 6 (2 m - 1)

解答

m = 3

求解步骤

7 m + 4 (m + 3) = 5 m + 6 (2 m - 1)

乘开

4 (m + 3) : 4 m + 12

7 m + 4 m + 12 = 5 m + 6 (2 m - 1)

同类项相加:

7 m + 4 m = 11 m

11 m + 12 = 5 m + 6 (2 m - 1)

乘开

6 (2 m - 1) : 12 m - 6

11 m + 12 = 5 m + 12 m - 6

同类项相加:

5 m + 12 m = 17 m

11 m + 12 = 17 m - 6

将

12

到右边

11 m = 17 m - 18

将

17 m

para o lado esquerdo

- 6 m = - 18

两边除以

- 6

m = 3

作图

流行的例子

3 (x - 8) = x + 4

solvefor y,4x-y-1= 3/2 x-y-6

so l v e f or y, 4 x - y - 1 = \frac{3}{2} x - y - 6

-8.75x+14=-5.25x-3.5

- 8.75 x + 14 = - 5.25 x - 3.5

solvefor x,6x-7y=14

so l v e f or x, 6 x - 7 y = 14

f = (- 1)^{2} + 2