Question

despejar la variable correspondiente de cada expresion añgebraica
a) x-3=7
b) y+4=1
c) 4z+1=2
d) 8a-27=6a-21
e) 2b-14=3(2-b)
f) 4-2(3-c)=12-5c
g) 2(d-10)+3(2d-5)=5
7x-2(x-3)=12

Answer 1

Explicación paso a paso:

a) x-3=7

x = 7 - 3

x = 4

b) y+4=1

y = 1 - 4

y = - 3

c) 4z+1=2

4z = 2 - 1

z = 1/4

z = 0.25

d) 8a-27=6a-21

8a - 6a = - 21 + 27

2a = 6

a = 6/2

a = 3

e) 2b-14=3(2-b)

2b - 14 = 6 - 3b

2b + 3b = 6 + 14

5b = 20

b = 20/5

b = 4

f) 4-2(3-c)=12-5c

4 - 6 + 2c = 12 - 5c

- 2 + 2c = 12 - 5c

2c + 5c = 12 + 2

7c = 14

c = 14/7

c = 2

g) 2(d-10)+3(2d-5)=5

2d - 20 + 6d - 15 = 5

8d - 35 = 5

8d = 5 +35

d = 40/8

d = 5

h) 7x-2(x-3)=12

7x - 2x + 6 = 12

5x + 6 = 12

5x = 12 - 6

x = 6/5

x = 1.2