two step equations. understand the problem ex: chris’s landscaping bill is 380$. the plants cost...
Post on 18-Jan-2016
215 Views
Preview:
TRANSCRIPT
Two Step equations
Understand The Problem EX: Chris’s landscaping bill is 380$. The
plants cost 212$,and the labor cost 48$ per hour.
Total bill = plants + labor 380 = 212 + 48h
Make A Plan THINK: First the variable is multiplied by 48, and then 212 is added to the
result. Work backward to solve the equation. Undo the operations in reverse order: First subtract 212 from both sides of the equation, and then divide both sides of the new equation by 48.
Solve: 380= 212+48h -212 -212 Answer= the landscaper worked 3.5 hours 168 = 48h 168 = 48h 48 48 3.5 =h
Look Back If the landscaper worked 3.5 hours, the
labor would be $48(3.5) = $168. The sum of the plants and the labor would
be $212 + $168 = $380.
Simple
380 – 212 = 168 168 divided by 48= 3.5= h
Homeworkwork on at home =) PG: 500
1-4,5
top related