Question

a) 5x = 3x + 12
b) 4x - 1 = 3x - 5
c) 3x + 2 = x - 14
d) 6x - 10 = 25 + x
e) 10x + 20 = 3x + 48
f)6x - 10 = 2x + 6
g) 2x - 12 = -x + 3
h) 8x - 13 = - 2 x + 87
i) x + 2x - 3 = -x + 9
j) 2x + 3x - 14 = - x + 4​

Answer 1

a) 2x = 12 — x = 6
b) x = -4
c) 2x = -12 — x = -6
d) 5x = 35 — x = 7
e) 7x = 28 — x = 4
f) 4x = 16 — x = 4
g) 3x = 15 — x = 5
h) 10x = 100 — x = 10
i) 2x = 12 — x = 6
j) 6x = 18 — x =3

Answer 2

Resposta:

a=> x=6

b=> x=-4

c=> x=-8

d=> x=7

e=> x=4

f=> x=4

g=> x=5

h=> x=10

i=> x=3/2

j=> x=3

Explicação passo-a-passo:

a( 5x-3x=12

2x=12

2x/2=12/2

x=12/2

x=6

b( 4x-1-3x=-5

x-1=5

x=-5+1

x=-4

c( 3x+2-x=-14

2x+2=-14

2x=-14-2

2x=-16

2x/2=-16/2

x=-16/2

x=-8

d( 6x-10-x=25

5x-10=25

5x=25+100

5x=35

5x/5=35/5

x=35/5

x=7

e( 10x+20-3x=48

7x+20=48

7x=48-20

7x=28

7x/7=28/7

x=28/7

x=4

f( 6x-10-2x=6

4x-10=6

4x=6+10

4x=16

4x/4=16/4

x=16/4

x=4

g( 2x-12+x=3

3x-12=3

3x=3+12

3x=15

3x/3=15/3

x=15/3

x=5

h( 8x-13+2x=87

10x-13=87

10x=87+13

10x=100

10x/10=100/10

x=100/10

x=10

i( 3x+3+x=9

4x+3=9

4x=9-3

4x=6

4x/4=6/4

x=6/4

x=3/2

j( 5x-14+x=4

6x-14=4

6x=4+14

6x=18

6x/6=18/6

x=18/6

x=3