Question

Resolva em R as equações a seguir:

a) x - 5 = 8 =
b) x - 4 =3 =
c) x + 6 = 5 =
d) 10 = x + 8 =
e) 15 = x + 20 =
f) 9 x - 2 = 4x + 18 =
g) 2 x - 10 + 7 x + 10 = 180 =
h) 7 x - 10 - y + 50 =
i) 4 x - 18 + 3 x = 10 =
j) 2 x + 5 + x + 7 = 18 =
k) 5 x + 91 = 4 x - 7 =
l) 7 x + 1 = 5 x - 7 =
m) 4 x + 5 = x + 20 =

Answer 1

Respo....

Explicação passo a passo:

a) x-5=8

x=8+5

x=13

b) x-4=3

x=3+4

x=7

c)x+6=5

x=5-6

x=-1

d) 10=x+8

x=8-10

x=-2

e)15=x+20

x=20-15

x=5

f) 9x-2=4x+18

9x-4x=18+2

5x=20

x=20/5

x=4

g)2x-10+7x+10=180

2x+7x=180+10-10

9x=180

x=180/9

x=20

h) 9x-2=4x+18

9x-4x=18+2

5x=20

x=20/5

x=4

i) 4x-18+3x=10

4x+3x=10+18

7x=28

x=28/7

x=4

j)2x+5+x+7=18

2x+x=18-7-5

3x=18-12

3x=6

x=6/3

x=2

k) 5x+91=4x-7

5x-4x=-7-91

x=98

l)7x+1=5x-7

7x-5x=-7-1

2x=-8

x=-8/2

x=-4

m) 4x+5=x+20

4x-x=20-5

3x=15

x=15/3

x=5