Question

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

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Answer 1

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