Substitution is best to use one one or both equations is already solved for one of the variables. Elimitation can be use if all variables have a coefficient other than 1.
Divide both sides of the inequality by 4 but don’t flip the symbol.
You only flip the inequality symbol if you divide by a negative number.
If you’re solving for x (which you are), you want to get x by itself. The only way to do that is to divide by 4.
Answer:
180 calculators.
Step-by-step explanation:
She has 180 calculators because if you were to un - simplify 5:1 you would get 180:5 and you would use the first number. So, you have 180 calculators.
Sorry if this is wrong I tried my best.
