Question

Obtenha a solução de cada equação do 1º grau: a) x + 8 = 16 b) y - 10 = 95c) z – 1 = - 13 d) 2x – 10 = 20 e) x + 4 = 2 f)x – 25 = 75

Answer 1

a) x + 8 = 16

x = 16 - 8

x = 8

b) y - 10 = 95

y = 95 + 10

y = 105

c) z - 1 = - 13

z = - 13 + 1

z = - 12

d) 2x - 10 = 20

2x = 20 + 10

2x = 30

x = 30/2

x = 15

e) x + 4 = 2

x = 2 - 4

x = - 2

f) x - 25 = 75

x = 75 + 25

x = 100

Answer 2

a) x+8=16

x=8-16

x=8

b) y-10=95

y=95+10

y=105

c) z–1=-13

z=-13+1

z= -12

d) 2x – 10 = 20

x= 20+10 /2

x=30/2

x=15

e) x + 4 = 2

x= 2-4

x=-2

f)x – 25 = 75

x=75+25

x=100