Answer:
Look at explanation
Step-by-step explanation:
ex= 3x-12= 21
21/3=7 (you change the symbols to its oppsoing one so plus to minus or multiplication to division)
12+7= 19
so x=19
1 Add or subtract to Isolate the variable term.
2 Multiply or divide to solve for the variable.
3 Check your solutions.
