Question

Solve the following equations without transposing and check your result. (i) x + 5 =9 (ii) y-12=-5 (iii) 3x + 4 = 19 (iv) 9z=81 (v) 3x + 8 = 5x + 2 (vi) 5y + 10 = 4y - 10​

Answer 1

Answer:

I) x + 5 = 9

or, x = 9 - 5

or, x = 4

ii) y - 12 = -5

or, y = -5 + 12

or, y = 7

iii) 3x + 4 = 19

or, 3x = 19-4

or, 3x = 15

or, x = 15/3

or, x = 5

iv) 9z = 81

or, z= 81/9

or, z = 9

v) 3x + 8=5x+2

or, 3x-5x=2-8

or, -2x=-6

removing the minus sign from both sides

or, 2x=6

or, x=6/2

or, x=3

vi) 5y+10=4y-10

or, 5y-4y=-10-10

or, y= -20