Question

4. Rezolvaţi în R
a) 5x + 7 = 3x + 17
d) 4x +2= 2x + 14
b) 6x - 1 = 2x + 7
e) 8x + 3 = 6x + 7
c) 4x +5= 2x+25
f) 2x - 5 = 7x + 25​

Answer 1

Explicație pas cu pas:

a) 5x+7-3x-17=2x-10

x=-10/2

x=-5

d) 4x+2-2x-14=2x-12

x=-12/2

x=-6

b)6x-1-2x-7=4x-8

x=-8/4

x=-2

e)8x+3-6x-7=2x-4

x=-4/2

x=-2

c)4x+5-2x-25=2x-20

x=-20/2

x=-10

f)2x-5-7x-25=-5x-30

x=-30/-5

x=6

Answer 2

a) 5x+7=3x+17

2x=10

x=5

d) 4x+2=2x+14

2x=12

x=6

b) 6x-1=2x+7

4x=8

x=2

e) 8x+3=6x+7

2x=4

x=2

c) 4x+5=2x+25

2x=20

x=10

f) 2x-5=7x+25

-5x=30

-x=6

x=-6