Question

Determine o x:

a) 2x-5=x+1
b) 2x+3=x+4
c) 5x+7=4x+10
d) 4x-10=2x+2
e) 4x-7=8x-2

Answer 1

a)
2x - 5 = x + 1

2x - 1x = 5 + 1

x = 6

b)
2x + 3 = x +4

2x - x = -3 + 4

x = 1

c)
5x + 7 = 4x + 10

5x - 4x = -7 + 10

x = 2

d)
4x - 10 = 2x + 2

4x - 2x = +10 + 2

2x = 12

x = $\frac{12}{2}$ = 6

e)
4x - 7 = 8x - 2

4x - 8x = 7 - 2

4x = -5 (-1)

x = $\frac{-5}{4}$