Question

10 – Determine x:
a) 6 = 2 + 16
b) 2 − 5 = + 1
c) 2 + 3 = + 4
d) 5 + 7 = 4 + 10
e) 4 − 10 = 2 + 2

Answer 1

a)
6=2+16
x=18-6
x=12

b)
2-5=1
x=1-2+5
x=4

c)
2+3=4
x=4-2-3
x=-1

d)
5+7=4+10
x=14-5-7
x=2

e)
4-10=2+2
x=4-4+10
x=10

Answer 2

a) 6x = 2x + 16
    6x - 2x = 16
    4x = 16
    x = 16/4
    x = 4

b) 2x - 5 = x + 1
    2x - x = 1 + 5
     x = 6

c) 2x + 3 = x + 4
    2x - x = 4 - 3
    x = 1

d) 5x + 7 = 4x + 10
    5x - 4x = 10 - 7
    x = 3

e) 4x - 10 = 2x+2 
    4x - 2x = 2 + 10
    2x = 12
    x = 12/2
    x = 6