Question

1)resolva as equações:
a)2(×-5)=3(×-4)

R=

b)2(×-3)+3(2×-1)=72

R=

c)7(×-2)=2(3×+4)

R=
me ajudem pfvr​

Answer 1

Resposta:

a) 2x-10 = 3x-12

2x-3x = -12+10

-x = -2 (-1)

x = 2

b) 2x-6+6x-3 = 72

8x = 72+3

8x = 75

x = 75/2

x = 37,5

c) 7x-14 = 6x+8

7x-6x = 8+14

x = 22