展开 (x-2y=3,)-(2x+3y=13)

解答

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(x - 2 y = 3,) - (2 x + 3 y = 13)

(x - 2 y = 3,) - 2 x - 3 y = 13

求解步骤

(x - 2 y = 3,) - (2 x + 3 y = 13)

= (x - 2 \cdot 3 =, y) - (2 x + 3 \cdot 13 = y)

- (2 x + 3 y = 13) : - 2 x - 3 y = 13

(x - 2 y = 3,) - 2 x - 3 y = 13

e x p an d \frac{16 ( 1 + x - 1 )}{x}

e x p an d \frac{2 ^{4}}{2 ^{3}}

e x p an d \frac{1}{x ( x ^{2} + w ^{2} )}

e x p an d (2 n x + 5 y = 6) (- 2)

e x p an d π (1 + y^{2})^{2}