一年一班有28人数学打了满分,有33人语文打了满分,数学和语文都打满分的有15人,一年一班共有多少人?+H(V(x(p0s)X6z0i
算式:提示(a2g2}(Y6J6e.Y+H(V(x(p0s)X6z0i
答;一年一班共有:U5Q*[,H8c(m6Q人。+H(V(x(p0s)X6z0i