七年级数学整式及其加减(二)化简下列各式:
(1)3(xy-2z)+(-xy+3z)(2)-4(pq+pr)+(4pq+pr)(3)(2x-3y)-(5x-y)(4)-5(x-2y+1)-(1-3x+4y)(5)(...
(1)3(xy-2z)+(-xy+3z)
(2)-4(pq+pr)+(4pq+pr)
(3)(2x-3y)-(5x-y)
(4)-5(x-2y+1)-(1-3x+4y)
(5)(2a²b-5ab)-2(-ab-a²b)
(6)1-3(x-2分之1y²)+(-x+2分之1y²) 展开
(2)-4(pq+pr)+(4pq+pr)
(3)(2x-3y)-(5x-y)
(4)-5(x-2y+1)-(1-3x+4y)
(5)(2a²b-5ab)-2(-ab-a²b)
(6)1-3(x-2分之1y²)+(-x+2分之1y²) 展开
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