Question

A)5×+7=4×+10
b) 3×-4=2×+8
c)7×-28=2×+7
d)4×-1=3×3
e)6×+10=3×-5
f)18x-100=8×+200
ME AJUDEMMM​

Answer 1

Resposta

A)5×+7=4×+10

5x-4x=10-7

x=2

b) 3×-4=2×+8

3x-2x=8+4

x=12

c)7×-28=2×+7

7x-2x= 7+28

5x=35

x=35/5

x=7

d)4×-1=3×3

4x-3x= 3+1

x= 4

e)6×+10=3×-5

6x-3x= -5-10

3x= -15

x= -15/3

x= -5

f)18x-100=8×+200

18x-8x= 200+100

10x=300

x=300/10

x=30

Answer 2

Resposta:

a) x=3

b) x=12

c) x=7

d) x= $-\frac{1}{5}$ decimal x= 0,2

e) x= -5

f) x=30