式の加法・減法(整数)2(6問)
計算せよ。
4x+3y+(2x-5y+9)
解答○ ×-2x+7y-(8x+9y-2)
解答○ ×5x-8y-(4x-12y+7)
解答○ ×2x2-3x+2+(3x2+7x+1)
解答○ ×4x2+8x+1-(6x2+5x-3)
解答○ ×3ab-2a-5b-(ab-9a+5b)
解答○ ×問題と解答
4x+3y+(2x-5y+9)6x-2y+9 -2x+7y-(8x+9y-2)-10x-2y+2 5x-8y-(4x-12y+7)x+4y-7 2x2-3x+2+(3x2+7x+1)5x2+4x+3 4x2+8x+1-(6x2+5x-3)-2x2+3x+4 3ab-2a-5b-(ab-9a+5b)2ab+7a-10b
