Question

resolva as equações do 1⁰ grau:

a) 3x + 4 = 22
b) 5x – 3 = 47
c) 4x – 1 = 16
d) 8x = 72
e) 10x – 34 = 106
f) 3x + 2x = 100
g) 7x – 3 = 6x + 8​

Answer 1

Resposta:

a) 3x + 4 = 22

3x=22-4

3x=18

x=18/3

x=6

b) 5x – 3 = 47

5x=47+3

5x=50

x=50/5

x=5

c) 4x – 1 = 16

4x=16+1

4x=17

x=17/4

d) 8x = 72

x=72/8

x=9

e) 10x – 34 = 106

10x=106+34

10x=140

x=140/10

x=14

f) 3x + 2x = 100

5x=100

x=100/5

x=20

g) 7x – 3 = 6x + 8

7x-6x=8+3

x=11