Question

Resolva as equações abaixo: a) x + 3 = 4 b) 2x + 5 = 10 c) 2x + 6 = - 3x – 4 d) 4x + 9 = 2x – 8 e) 2 (X + 3) = 10 f) 4x – 7 = 1 g) ) x + 2 = 5 h) 2y – 4 = 2 i) 2 a + 4 = - 6 j) - 2 + 5y = 13 k) x + 1 = 3 l) 2x - 3 = 8

Answer 1

Explicação passo-a-passo:

a) x + 3 = 4

x= 4-3

x=1

b) 2x + 5 = 10

2x=10-5

2x=5

x=5/2

c) 2x + 6 = - 3x – 4

2x+3x= -4-6

5x= -10/5

x= -2

d) 4x + 9 = 2x – 8

4x-2x= -8-9

2x= -17

x= -17/2

e) 2 (X + 3) = 10

2x+6=10

2x= 10-6

2x=4

x=4/2

x=2

f) 4x – 7 = 1

4x=1+7

4x=8

x=8/4

x=2

g) ) x + 2 = 5

x=5 -2

x=3

h) 2y – 4 = 2

2y=2+4

2y=6

y= 6/2

y=3

i) 2 a + 4 = - 6

2a= -6-4

2a= -10

a= -10/2

a= -5

j) - 2 + 5y = 13

5y= 13+2

5y=15

y=15/5

y=3

k) x + 1 = 3

k=3-1

k= 2

l) 2x - 3 = 8

2x=8+3

2x=11

x=11/2