Solving linear equations Flashcards
1
Q
What do you mean by solving a linear equation such as
2x + 3 = 7
A
Find the value of x such that the left hand side and the right hand side of the equation is the same
Left hand side 2 * 2 + 3 = 7
Right hand side = 7
So x = 2 is the solution
2
Q
Solve
x + 3 = 7
A
x = 7 - 3
= 4
3
Q
Solve
x - 3 = 7
A
x = 7 + 3
= 10
4
Q
Solve
2x + 3 = 7
A
2x = 7 - 3
2x = 4
x = 4/2
= 2
5
Q
Solve
2x - 3 = 7
A
2x = 7 + 3
2x = 10
x = 10/2
= 5
6
Q
Solve
2x - 3 = 7 + x
A
2x - x = 7 + 3
x = 10
7
Q
Solve
2x + 3 = 7 + x
A
2x - x = 7 - 3
x = 4
8
Q
Solve
2(x + 3) = 8
A
x + 3 = 8/2 or 2x + 6 = 8
x + 3 = 4 2x = 8 - 6
x = 4 - 3 2x = 2
= 1 x = 2/2
= 1
