a) A+B=C
5-2x+6x+4=1-3x
7x=-8 /:7
x= - 8/7
B)C+A=B
1-3x + 5-2x = 6x+4
-11x = -2 / :11
x=2/11
C) A-B-C=0
5-2x-6x-4-1+3x=0
-5x=0
x=0
d) A*C=B*X
(5-2x)*(1-3x)= (6x+4)*x
5-15x-2x+6x^2 =6x^2+4x
-21x=-5
x=5/21
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a) A+B=C
5-2x+6x+4=1-3x
7x=-8 /:7
x= - 8/7
B)C+A=B
1-3x + 5-2x = 6x+4
-11x = -2 / :11
x=2/11
C) A-B-C=0
5-2x-6x-4-1+3x=0
-5x=0
x=0
d) A*C=B*X
(5-2x)*(1-3x)= (6x+4)*x
5-15x-2x+6x^2 =6x^2+4x
-21x=-5
x=5/21