7.A.1.c Solve one- and two-step equations involving rational numbers.
7.A.1.d Solve equations using the distributive property and combining like terms.
7.A.1.e Solve one-step and two-step inequalities involving integers and represent solutions on a number line.
7.A.2.a Write one- and two-step equations involving rational numbers from words, tables, and authentic situations.
7.A.2.b Write one- and two-step inequalities to represent authentic situations involving integers.
Isolate the Variable
To use inverse operations to get the variable by itself on one side of an equation. Example: In x+5=12x + 5 = 12, subtract 5 from both sides to isolate xx, giving x=7x = 7.