Question

a)10y-10-7x=10y+7x+10
b)-9(7-8x)=2(-8x-7x)
c)2x(12x-7)=-3x(-8x-7)+410
d)2x(3x-7)-x(-6x-7)-63
e)4(x-8)-3(x+8)+20=6(x-7)-10
f)12(y-2)+10(-y-2)+13=6(y-1)-5
g)(2h)=4(h-3)
h)(2g)+g-16g=(4g)+(g+4)+8
i)4(7+x)=(8-2x)
j)4x+2(2x-3)=3(2x+1)
k)3(3x-3)=3(2x+1)+3(3x)
alguem pode me ajudar por favor e urgente?​

Answer 1

Resposta:

a) 10y-10-7x=10y+7x+10

10y - 10y - 10 - 10 - 7x - 7x = 0

- 20 - 14x = 0

- 20 = 14x

x = 20 / 14

b) -9(7-8x)=2(-8x-7x)

- 63 + 72x = - 16x - 14x

72x + 16x + 14x = 63

99x = 63

x = 99/63 (simplifica ÷)

x = 11/7