Question

Determinar o valor da incógnita nas equações
A)2x+3x=25+5 B)4×(3+2)=40 C)2 (y+3)=2 (3+y) D)-5+a-3=-3a-2 E)2 (y+y)=48-8

Answer 1

A: X=6
B: X=2
C: Y=-2
D: A=-3
E: Y=10

Answer 2

A)2x+3x=25+5

5x = 30

x= 30/5

x= 6

B)4x(3+2)=40

12x + 8x = 40

20x = 40

x= 40/20

x= 2

C)2 (y+3)=2 (3+y)

2y + 6 = 6 + 2y

2y - 2y = 6 - 6

0

D)-5+a-3=-3a-2

- 8 + a = - 3a - 2

a + 3a = - 2 + 8

4a = 6

a= 6/4(÷2)

a= 3/2

E)2 (y+y)=48-8

2y + 2y = 40

4y = 40

y= 40/4

y= 10