According to the meaning of the question:
Suppose: It turns out that Ying Ying installed X jiaozi and Grandma installed 6x.
Column equation:
(6x+6) /(x+6)=4
6x+6=4x+24
2x= 18
x=9
Total: 9+9x6=9+54=63 (unit)
So Grandma and Ying Ying originally packed 63 jiaozi in one bag.
Extended data:
There are five steps to solve a linear equation with one variable, namely, denominating, removing brackets, shifting terms, merging similar terms, and the transformation coefficient is 1. All steps are carried out according to the properties of algebraic expressions and equations.
In one-dimensional linear equations, the denominator removal step is usually multiplied by the least common multiple of each denominator. If the denominator is a fraction, it can be replaced by the other part of the item multiplied by the reciprocal of the fraction on the denominator.