Question

me pueden ayudar porfa

Answer 1

a). x + 19 = 20

x + 19 - 19 = 20 - 19

x = 20 - 19

x = 1

b). x - 9 = 15

x - 9 + 9 = 15 + 9

x = 15 + 9

x = 24

c). x - 4 + 7 = - 8

- 4 + 7

+ (7 - 4) = 3

x + 3 = - 8

x + 3 - 3 = - 8 - 3

x = - 8 - 3

- (8 + 3) = - 11

x = - 11

d). y - 2 = 10

y - 2 + 2 = 10 + 2

y = 10 + 2

y = 12

e). m + 3 = 6

m + 3 - 3 = 6 - 3

m = 6 - 3

m = 3