Exercise 3.2
1 Solve the following equations without transposing and check your result
(i) x + 5 = 9
Solution: x =
(ii) y-12 = -5
Solution: y =
(iii) 3x + 8 = 5x + 2
Solution: x =
(iv) 5y + 10 = 4y - 10
Solution: y =
2 Solve the following equations by transposing the terms and check your result
(i) 2+y = 7
Solution: y = 7-2 =
Substituting y = 5 into the original equation:
2 + 5 =
LHS = RHS
(ii) 2a - 3 = 5
Solution:
2a =
a =
(iii) 5(x+4) = 35
Solution:
x+4 =
x+4 =
x =
(iv) 3(x-3) = 5(2x+1)
Solution:
3x-9 = 10x+5
x =