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受欢迎的代数 >

2(x+6)+4(6)=3(3x-5)+2x(6)-1(6)

解答

2 (x + 6) + 4 (6) = 3 (3 x - 5) + 2 x (6) - 1 (6)

解答

x = 3

求解步骤

2 (x + 6) + 4 (6) = 3 (3 x - 5) + 2 x (6) - 1 \cdot (6)

去除括号:

(a) = a

2 (x + 6) + 4 \cdot 6 = 3 (3 x - 5) + 2 x (6) - 1 \cdot (6)

数字相乘:

4 \cdot 6 = 24

2 (x + 6) + 24 = 3 (3 x - 5) + 2 x (6) - 1 \cdot (6)

去除括号:

(a) = a

2 (x + 6) + 24 = 3 (3 x - 5) + 2 x \cdot 6 - 1 \cdot 6

数字相乘:

2 \cdot 6 = 12

2 (x + 6) + 24 = 3 (3 x - 5) + 12 x - 1 \cdot 6

数字相乘:

1 \cdot 6 = 6

2 (x + 6) + 24 = 3 (3 x - 5) + 12 x - 6

展开

2 (x + 6) + 24 : 2 x + 36

展开

3 (3 x - 5) + 12 x - 6 : 21 x - 21

2 x + 36 = 21 x - 21

将

36

到右边

2 x = 21 x - 57

将

21 x

para o lado esquerdo

- 19 x = - 57

两边除以

- 19

x = 3

作图

流行的例子

x + 10 = - 14

log_{7}(1/7)=-1

lo g_{7} (\frac{1}{7}) = - 1

4 (z - 3) = 8

solvefor x,f(x-1)=x-2

so l v e f or x, f (x - 1) = x - 2

solvefor t,f=f(-t)

so l v e f or t, f = f (- t)