Question

A) 2×+5-5×=1
B) 5+6×=5×+2
C) ×+2×-1-3=×
D) -3×+10=2×+8+1
E) 5×-5+×=9+×
F) 7×-4-×=-2×+8-3×

Answer 1

a) 2x + 5 - 5x = 1

-3x + 5 = 1

-3x = 1 - 5

-3x = -4 (.-1)

3x = 4

x = 4/3

b) 5 + 6x = 5x + 2

6x - 5x = 2 - 5

x = -3

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

x + 2x - x = 1 + 3

2x = 4

x = 4/2

x = 2

d) -3x + 10 = 2x + 8 + 1

-3x + 10 = 2x + 9

-3x - 2x = 9 - 10

-5x = -1 (.-1)

5x = 1

x = 1/5

e) 5x - 5 + x = 9 + x

5x - x - x = 9 + 5

5x = 14

x = 14/5

f) 7x - 4 - x = -2x + 8 - 3x

6x - 4 = -5x + 8

6x + 5x = 8 + 4

11x = 12

x = 12/11