Question

resolva as equações a seguir
a)x-5=20
b)2x+7=-23
c)4y=2y+40
d)-z-5=-3z+11
e)x+5=10
4
f)-0,8x-1=x+47
g)3a-a=10
2 7
h)3-5x=2x+31
i)7w=18-2w
j)15++=40
PRFV E PRA HOJE​

Answer 1

Resposta:

X - 5=20

X = 20+5

X= 25

2x+7=-23

2x=-23-7

2x = - 30

x= -30/2 = -15

4y=2y+40

4y-2y=40

2y=40

y=40/ 2 = 20

-z-5=-3z+11

- z +3z= 11+5

4z = 16

z = 16/4 = 4

X+5 =10

X =10-5

X= 5

3-5x=2x+31

-5x-2x= 31-3

-7x = 28

x= 28/-7 = - 4

7w=18-2w

7w+2w= -18

9w= -18

w= -18/9 = -2