展开-3x-(7x+4=-4(3x+1))

解答

展开

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

- 10 x - 4 = 12 x + 4

求解步骤

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

- (7 x + 4 = - 4 (3 x + 1)) : - 7 x - 4 = 4 (3 x + 1)

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

乘开

4 (3 x + 1) : 12 x + 4

- 3 x - 7 x - 4 = 12 x + 4

乘开

- 3 x - 7 x - 4 : - 10 x - 4

- 10 x - 4 = 12 x + 4

e x p an d \frac{( 25 + 5 s ) ( 100 + 300 s )}{s}

e x p an d \frac{3 x}{x}

e x p an d \frac{( x + 7 ) 2 x + 6}{2}

e x p an d s (x + sy + s^{2} z)^{3}

e x p an d \frac{4 ( a + h )}{( a + h ) - 6}