Question

2. Continue calculando as equações de 1º grau:

a) 3y = 33

b) 3x – 1 = 8

c) 9x + 2 = 7x

d) 3x – 1 = 5x

e) 11x + 17 = 10x + 13

f) X – 4 = 0

g) X + 4 = 11

h) 5x = 4x + 8

i) 2x = 8

j) 5x = -30

k) 12x – 144 = 9x + 9

l) 18x – 220 = 3x + 5

m) 17x - 186 = 3x + 10

n) 3x – 7 = 2x + 5

o) 7x + 8 = 4x – 10​

Answer 1

Explicação passo-a-passo:

a) 3y = 33

y = 33/3

y = 11

b) 3x – 1 = 8

3x = 8 + 1

x = 9/3

x = 3

c) 9x + 2 = 7x

9x - 7x = -2

2x = -2

x = -2/2

x = - 1

d) 3x – 1 = 5x

3x – 5x = 1

-2x = 1

x = - 1/2

e) 11x + 17 = 10x + 13

11x -10x = 13 - 17

x = - 4

f) X – 4 = 0

x = 4

g) X + 4 = 11

x = 11 - 4

x = 7

h) 5x = 4x + 8

5x - 4x = 8

x = 8

i) 2x = 8

x = 8/2

x = 4

j) 5x = -30

x = -30/5

x = - 6

k) 12x – 144 = 9x + 9

12x – 9x = 9 + 144

3x = 153

x = 153/3

x = 51

l) 18x – 220 = 3x + 5

18x – 3x = 5 + 220

15x = 225

x = 225/15

x = 15

m) 17x - 186 = 3x + 10

17x - 3x = 10 + 186

14x = 196

x = 196/14

x = 14

n) 3x – 7 = 2x + 5

3x – 2x = 5 + 7

x = 12

o) 7x + 8 = 4x – 10

7x - 4x = - 10 - 8

3x = - 18

x = - 18/3

x = - 6