Question

resolva as equações a seguir:
a) -7x+5x=60
b)8x+12=5x-48
c)7x-23+2x=6x-6
d)2(4x+3)=5(x-3)

Answer 1

a)-7x+5x=60
-2x=60
x=60/-2
x=-30

b) 8x+12=5x-48
8x-5x=-48-12
3x=-60
x=-60/3
x=-20

c) 7x-23+2x=6x-6
7x+2x-6x=-6+23
-3x=17
x=17/-3

d) 8x+6=5x-15
8x-5x=-15-6
3x=-21
x=-21/3
x=-7

espero ajudar ♥

Answer 2

a) -7x + 5x = 60

-2x = 60
x = 60/-2
x = -30


b) 8x + 12 = 5x - 48

8x - 5x = -48 - 12
3x = -60
x = -60/3
x = -20


c) 7x - 23 + 2x = 6x - 6

7x + 2x - 6x = -6 + 23
3x = 17
x = 17/3


d) 2(4x + 3) = 5(x - 3)

8x + 6 = 5x - 15
8x - 5x = -15 - 6
3x = -21
x = -21/3
x = -7