This symbolize for
(cross the boundary)
of solving method
LINEAR EQUATIONSLINEAR EQUATIONS
KeypointsKeypoints NotesNotes
SummarySummary
Solve linear equation in one variable :
1 .Equal both sides
2 .Cross the boundary
LINEAR EQUATION IN ONE VARIABLE
TWO ways to solve linear equation in 1
- Equal both sides
y - 9 = 2
y - 9 + 9 = 2 + 9
y = 11 - Cross the boundary
Eliminating the numbers
3 x + 4 = 10
3 x = 10 - 4
x = 6
ATTACK- DEFEND GAME!
to attack
to defend
Behind the game of
Attack-Defend :
If one of the student
attack, then the
other student
should defend.
attack defend
Tricks to use cross the
boundary method :
Play the Attack-Defend
Game