Question

10_ indique a solução de cada uma das equações.

a_5=×+3
b_72=48+×
c_7=10+×
d_15=×+20
e_0=×+18
f_-7=×+50​

Answer 1

Resposta:

a) 5-3=x

x=2

b) 72-48=x

x=24

c)7-10=x

x= -3

d) 15-20= x

x= -5

e) x= -18

f) x= -57

Answer 2

a)5=×+3

5-3=×=2

S={2}

b)72=48+×

72-48=×=24

S={24}

c)7=10+×

-×=10-7

-×=3 .(-1)

×=-3

S={-3}

d)15=×+20

15-20=×=-5

S={-5}

e)0=×+18

-×=18 .(-1)

×=-18

S={-18}

f)-7=×+50

-×=50+7

-×=57 .(-1)

×=-57

S={-57}