MatemáticasBásico1 respuestas

Me ayudan porfavor?

Me ayudan porfavor? 6 (b + 5) = 18 - 7 (h - 4) = 21 2 (3 - t) = - 10 4 (x + 5) = 36 6 (a + 5) = 42 4 (6 - x) = 20.

Mejor respuesta

7

6 (b + 5) = 18

6b + 30 = 18

6b = 18 - 30

6b = - 12

b = - 12 / 6

b = - 2 - 7 (h - 4) = 21 - 7h + 28 = 21 - 7h = 21 - 28 - 7h = - 7

h = - 7 / - 7

h = 1

2 (3 - t) = - 10

6 - 2t = - 10 - 2t = - 10 - 6 - 2t = - 16

t = - 16 / - 2

t = 8

4 (x + 5) = 36

4x + 20 = 36

4x = 36 - 20

4x = 16

x = 16 / 4

x = 4

6 (a + 5) = 42

6a + 30 = 42

6a = 42 - 30

6a = 12

a = 12 / 6

a = 2

4 (6 - x) = 20

24 - 4x = 20 - 4x = 20 - 24 - 4x = - 4

x = - 4 / - 4

x = 1.