Question

2x + 5 = 19 b) 3t − 4 = 20 c) 5m − 3 = 3m + 7 d) 4n + 9 + n = 24 e) 9 + 7p − 3 − 4p = 27​

Answer 1

Respuesta:

a ) x = 7

b ) t = 8

c ) m = 5

d ) n = 3

e ) p = 7

Explicación paso a paso:

a )

2x + 5 = 19

2x = 19 - 5

2x = 14

x = 14 / 2

x = 7

b )

3t - 4 = 20

3t = 20 + 4

3t = 24

t = 24 / 3

t = 8

c )

5m - 3 = 3m + 7

5m - 3m = 3 + 7

2m = 10

m = 10 / 2

m = 5

d )

4n + 9 + n = 24

4n + n + 9 = 24

5n = 24 - 9

5n = 15

n = 15 / 5

n = 3

e )

9 + 7p - 3 - 4p = 27

7p - 4p + 9 - 3 = 27

3p + 6 = 27

3p = 27 - 6

3p = 21

p = 21 / 3

p = 7