Question

2-Resolva as equações
a)2x+1=4x-7
b)3x-2=4x+9
c)5x+4=3x-2x+4

Answer 1

Explicação passo-a-passo:

a)

2x+1=4x-7

2x-4x=-7-1

-2x=-8

x=-8/-2

x=4

b)

3x-2=4x+9

3x-4x=9+2

-x=11

x=11/-1

x=-11

c)

5x+4=3x-2x+4

5x-3x+2x=4-4

2x+2x=0

4x=0

x=0/4

x= 0