Question

Resolva as equações em R:

a) 18x-43=65
b)23x-16=14-17x
c)10y-5(1+y)=3(2y-2)-20
d)x(x+4)+x(x+2)=2x²+12

Answer 1

B) 23x-16=14-17x
23x+17=14+16
40x=30
x= 40/30

Answer 2

a)18x = 65 + 43
18x = 108
x = 6

b)40x = 30
x = 3/4

c)10y - 5 -5y = 6y - 6 - 20
5y - 5 = 6y - 26
y = 21

d)x^2 + 4x + x^2 + 2x = 2x^2 + 12
2x^2 + 6x = 2x^2 + 12
6x = 12
x = 2