Question

1- Resolva as equações:
a) 2x - 5 +9 = x-10+4
b) 4x+2x-16=20-8
c) 6x+8=2x-16+24
d) 7x+8-14=-2x+9
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Answer 1

Resposta:

A ) X = -10 ;

B ) X = 14/3 ;

C ) X = 0 ;

D ) X = 5/3 ;

Explicação:

a) 2x - 5 +9 = x-10+4

• 2x + 4 = x - 6

2x - x = -6 -4

X = - 10

b) 4x+2x-16=20-8

• 6x - 16 = 12

6x = 12 + 16

6x = 28

X = 14/3

c) 6x+8=2x-16+24

• 6x + 8 = 2x + 8

6x = 2x

6x - 2x = 0

4x = 0

X = 0

d) 7x+8-14=-2x+9

• 7x - 6 = -2x + 9

7x + 2x = 9 + 6

9x = 15

X = 5/ 3