同类项与合并同类项抢红包游戏(张少毅)

抢红包赢神秘礼物ZENGCHENGQUSHIYANXIAOXUE抢答红包15x+4x=恭喜你赢得棒棒糖2根9x红包2-7ab+6ab-ab恭喜你赢得棒棒糖1根红包3-5x-7x=-12x恭喜你赢得便棒棒糖3根ZENGCHENGQUSHIYANXIAOXUEmn+mn=红包42mn恭喜你赢得棒棒糖5根ZENGCHENGQUSHIYANXIAOXUE-0.7x2y2+0.2x2y2=红包5-0.5x2y2恭喜你赢得棒棒糖1包-0.9ac+0.9ac=红包6谢谢惠顾0