Question

rozwiąż rownanie
a) 2(3x-4)=10x
b) -4x=3(6-2x)
c) 4-3x=5(2-x)
d) -3x+6=3(2-x)
e) 6(x+4)=5x+1+x
f) -2(5x+2)=3-9x
g) 5-(3-4x)=5(1-x)
h) -2(4-5x)=3(4x+3)
<33

Answer 1

A)
6x - 8 = 10x
10x - 6x = -8
4x = -8
x = -2

b)
-4x = 18-6x
-4x + 6x = 18
2x = 18
x = 9

c)
4-3x = 10 - 5x
-3x + 5x = 10-4
2x = 6
x = 3

d)
-3x + 6 = 6-3x
0=0
równanie zawsze prawdziwe
e)
6x + 24 = 6x +1
6x - 6x = 1-24
0 = -23
równanie zawsze fałszywe

f)
-10x - 4 = 3 -9x
-10x + 9x = 3 + 4
-x = 7
x = -7

g)
5-3+4x = 5 -5x
2+4x = 5-5x
4x + 5x = 5 - 2
9x = 3
x = 3/9

h)
-8 + 10x = 12x + 9
10x - 12x = 9+ 8
-2x = 17
x = -17/2
x= -8 1/2