Question

Resolva em R as equações 1 grau a seguir :

a) 7 y - 10 = y + 50

b) 4 x - 18 + 3 x = 10

c) 2 x + 5 + x + 7 = 18

d) 5 x - 91 = 4 x - 77

e) 7 x + 1 = 5 x - 7

f) 4 x + 5 x + 20

g) 3 x + 3 + 4 x - 6 ) = 5 x - 5 +8

h) 2 x + 10 - 4 = 26 ​

Answer 1

Resposta:

A)7y+y=50+10

8y =60

y=60÷8

y=7,5

B) 4x-(+3×) =18+10

4x-3x =28

x=28

C)2x+x+5+7=18

3x+12=18

3x=18-12

3x=6

x=6÷3

x=2

D)5x-91=4x-7

5x-4x=91-7

x=84

E)7x-5x= -7-1

2x=-8

x= -8÷2

x=-4

F )9×=20

x=20/9

G)

3 x + 3 + 4 x - 6 ) = 5 x - 5 +8

3x+4x-5x=-5 -6+8

2x=-3

X=-3/2

h)2 x + 10 - 4 = 26

2x=26-10+4

2x=40

x=40÷2

x=20