Question

determine a raiz de cada equação a) × + 12 = 21
b) 7 × = 56
c) × - 32 = 8
d) ×/3 = 15

Answer 1

a) x + 12 = 21

x = 21-12

x = 9

b) 7x = 56

x = 56/7

x = 8

c) x - 32 = 8

x = 8+32

x = 40

d) x/3 = 15

x= 15.3

x= 45

Answer 2

determine a raiz de cada equação

a) × + 12 = 21

x+12=21

x=21-12

x=9

b) 7 × = 56

7x=56

x=56/7

x=8

c) × - 32 = 8

x-32=8

x=8+32

x=40

d) ×/3 = 15

x/3=15

x=15.(3)

x=45

espero ter ajudado!

boa tarde!