Question

Me ajudem prfvr
simplifique as expressões:
a) 5 (6+2x) +10=8

b) x/2+5=25 - x/2

c) 3x/2+5x/3=19

Answer 1

Resposta:

a) 5(6 + 2x) + 10 = 8

30 + 10x + 10 = 8

10x + 40 = 8

10x = 8 - 40

10x = -32

x = -32/10

x = -16/5

b) x/2 + 5 = 25 - x/2

2(x/2 + 5) = 2(25 - x/2)

x + 10 = 50 - x

x + x = 50 - 10

2x = 40

x = 40/2

x = 20

c) 3x/2 + 5x/3 = 19

6(3x/2 + 5x/3) = 6 × 19

9x + 10x = 114

19x = 114

x = 114/19

x = 6

Espero Ter Ajudado !!