Question

resolver as equações
3a=12+a
2x=-x+15
t=4t-7
0=12c-64
3t-15+t=-5t+4
1=-2c+35
4y-1-y=-7y

Answer 1

3a= 12+a
4a=12
a=12/4
a=3

2x=-x+15
3x=15
x=15/3
x=5

t=4t-7
-3t=-7
3t=7
t=7/3

Answer 2

Resposta:

Explicação passo-a-passo:

A)

3a=12+a

3a - a = 12

2a = 12

a = 12/2

a = 6

B)

2x=-x+15

2x + x = 15

3x = 15

x = 15/3

x = 5

C)

t=4t-7

7 = 4t - t

7 = 3t

3t = 7

t = 7/3

D)

0=12c-64

64 = 12c

12c = 64 (:4)

3c = 16

c = 16/3

E)

3t-15+t=-5t+4

4t - 15 = - 5t + 4

4t + 5t = 4 + 15

9t = 19

t = 19/9

F)

1=-2c+35

2c = 35-1

2c =34

c = 34/2

c= 17

G)

4y-1-y=-7y

3y - 1 = - 7y

3y + 7y = 1

10y = 1

y = 1/10