Question

resolva a equação do 1 grau
10 PONTOS

A)80+3X-10=100-2X-10

B)4(Y+3)-10=5(2Y-1)+7

C)10+5(7+Y)=7(Y+1)+6

D)8(5+Z)=5(4Z-2)+2

E)10M+20=30-5M

F)-5+4Z+10=10Z-1​

Answer 1

a) 80 + 3x - 10 = 100 - 2x - 10

3x + 70 = - 2x + 90

3x + 2x = 90 - 70

5x = 20

x = 20/5

x = 4

b) 4(y+3) - 10 = 5(2y-1) + 7

4y + 12 - 10 = 10y - 5 + 7

4y + 2 = 10y + 2

10y - 4y = 2 - 2

6y = 0

y = 0/6

y = 0

c) 10 + 5(7+y) = 7(y+1) + 6

10 + 35 + 5y = 7y + 7 + 6

45 + 5y = 7y + 13

7y - 5y = 45 - 13

2y =  32

y = 32/2

y = 16

d) 8(5+z) = 5(4z-2) + 2

40 + 8z = 20z - 10 + 2

40 + 8z = 20z - 8

20z - 8z = 40 + 8

12z = 48

z = 48/12

z = 4

e) 10m + 20 = 30 - 5m

10m + 5m = 30 - 20

15m = 10

m = 10/15

m = 2/3

f) -5 + 4z + 10 = 10z - 1

4z + 5 = 10z - 1

10z - 4z = 5 + 1

6z = 6

z = 6/6

z = 1​