Question

alguien q me ayude..urgente..!!

Answer 1

a) 6(7-x) = 8(6-x)
42 - 6x = 48 - 8x
8x - 6x = 48 - 42
2x =  6
x=6/2
x=3

b) -8(10-x) = -6
-80 + 8x = -6
8x = 80 - 6
8x = 74
x = 74/8
x = 37/4

c) (x+2)*3 = (3-x)*4 +3
3x + 6 = 12 - 4x + 3
3x + 4x = 3 + 12 - 6
7x = 9
x = 9/7

d) 3(1-2x) + 12 = 10 - 2(x-3)
3 - 6x +12 = 10 - 2x + 6
2x - 6x = 10 + 6 - 12 - 3
-4x = 1
x = -1/4