Question

B)8(x+3)+13=50 c) 5(2x+7)=3(x+8) d)6(x-5)=4(x+9) e)6(3x-3)=2(x+2) quais sao as respostas dessas fraçoes:?

Answer 1

B)8(x+3)+13=50
8x + 24 + 13 = 50
8x + 37 = 50
8x = 50 - 37
8x = 13
x = 13/8



c) 5(2x+7)=3(x+8)
10x + 35 = 3x + 24
10x - 3x = 24 - 35
7x = -11
x = -11/7



d)6(x-5)=4(x+9)
6x - 30 = 4x + 36
6x - 4x = 36 + 30
2x = 66
x = 66/2
x = 33




e)6(3x-3)=2(x+2)
18x - 18 = 2x + 4
18x - 2x = 4 + 18
16x = 22
x = 22/16

Answer 2

$b) \: 8(x + 3) + 13 = 50 \\ 8x + 24 + 13 = 50 \\ 8x + 37 = 50 \\ 8x = 50 - 37 \\ 8x = 1 3 \\ \boxed{x = \frac{13}{8} }$

$b)5(2x + 7) = 3(x + 8) \\ 10x + 35 = 3x + 24 \\ 10 - 3x = 24 - 35 \\ 7x = - 11 \\ \boxed{x = - \frac{11}{7} }$

$d)6(x - 5) = 4(x + 9) \\ 6x - 30 = 4x + 36 \\ 6x - 4x = 36 + 30 \\ 2x = 66 \\ x = \frac{66}{2} \\ \boxed{x = 33}$

$e) \: 6(3x - 3) = 2(x +2 ) \\ 18x - 18 = 2x + 4 \\ 18x - 2x = 4 + 18 \\ 16x = 22 \\ x = \frac{ {22}^{ \div 2} }{16} \\ \\ \boxed{x = \frac{11}{8} }$