Question

Por favor ayúdenme
7(18-x)=6(3-5x)-(7x+21)-3(2x+5)

Answer 1

7(18-x)=6(3-5x)-(7x+21)-3(2x+5)
126-7x= 18-30x-7x-21-6x-15
-7X+30x+7x+6x= 18-21-15-126
36x= -144
x=-144/36
x= -4

Answer 2

7(18 + -1x) = 6(3 + -5x) + -1(7x + 21) + -3(2x + 5)

(18 * 7 + -1x * 7) = 6(3 + -5x) + -1(7x + 21) + -3(2x + 5)

(126 + -7x) = 6(3 + -5x) + -1(7x + 21) + -3(2x + 5)

126 + -7x = (3 * 6 + -5x * 6) + -1(7x + 21) + -3(2x + 5)

126 + -7x = (18 + -30x) + -1(7x + 21) + -3(2x + 5)

126 + -7x = 18 + -30x + -1(21 + 7x) + -3(2x + 5)

126 + -7x = 18 + -30x + (21 * -1 + 7x * -1) + -3(2x + 5)

126 + -7x = 18 + -30x + (-21 + -7x) + -3(2x + 5)

126 + -7x = 18 + -30x + -21 + -7x + -3(5 + 2x)

126 + -7x = 18 + -30x + -21 + -7x + (5 * -3 + 2x * -3)

126 + -7x = 18 + -30x + -21 + -7x + (-15 + -6x)

126 + -7x = 18 + -21 + -15 + -30x + -7x + -6x

126 + -7x = -3 + -15 + -30x + -7x + -6x

126 + -7x = -18 + -30x + -7x + -6x

126 + -7x = -18 + -37x + -6x

126 + -7x = -18 + -43x

126 + -7x = -18 + -43x

126 + -7x + 43 x = -18 + -43x + 43x

126 + 36x = -18 + -43x + 43x

126 + 36x = -18 + 0

126 + 36 x = -18

126 + -126 + 36 x = -18 + -126

0 + 36 x = -18 + -126

36x = -18 + -126

36x = -144

x = -4