: Finding the numerical value of an expression when variables are replaced with given numbers (e.g., finding 5xy25 x y squared
: Simplifying expressions by multiplying numerical coefficients and combining variables using laws of exponents (e.g., ershova goloborodko 7 klass reshebnik sa 8 variant b
: Provides comprehensive explanations for all 7th-grade independent works in this series. : Finding the numerical value of an expression
: Substituting rational numbers (fractions or decimals) into a monomial and solving. ershova goloborodko 7 klass reshebnik sa 8 variant b