3x﹣3=450
3x﹣3+3=450+3
3x=453
3x÷3=453÷3
x=151
答：水果店运进梨151千克
给加下划线的词，选择正确的解释。
等闲识得东风面。_____
—What does Mary _______?
—She's tall and has long curly hair. She is of medium build.
—____ are these tomatoes?
—They're green.
