Question

Resolva as equações

A) 7 x + 5 =68 - 2 x
B)14- 3 x =9 - 2 x
C)8 x - 9 = 2x
D)10-4x=9-2x

Answer 1

A) 7 x + 5 =68 - 2 x 
7x+2x=68-5
9x=63
x=7

B)14- 3 x =9 - 2 x
-3x+2x=9-14
-x=-5
 x=5

C)8 x - 9 = 2x
8x-2x=9
6x=9
x=3/2

D)10-4x=9-2x
-4x+2x=-10+9
-2x=-1
x=1/2

Espero ter ajudado ;)