Question

rezolvati ecuatiile:

a) 2x+3(x-3)=1

b) 3(x+1)-2(x+3)=5

c)5x-7=2(x+3)

Answer 1

a) 2x+3(x-3)=1,  2x+3x-9=1,  5x=10,  x=10/5=2

b) 3(x+1)-2(x+3)=5,  3x+3-2x-6=5,  x=5-3+6=8
c) 5x-7=2(x+3),   5x-7=2x+6,   3x=13,  x=13/3

Answer 2

a ) 2x + 3( x - 3 ) = 1 

2x + 3x - 9 = 1 

5x - 9 = 1 

5x = 1 + 9 

5x = 10 

x = 10 : 5 

x = 2 

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b ) 3( x + 1 ) - 2( x + 3 ) = 5 

3x + 3 - 2x - 6 =  5

x - 3 = 5 

x = 5 + 3 

x  = 8 

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c ) 5x - 7 = 2( x +  3 ) 

5x - 7 = 2x + 6 

5x - 2x = 6 + 7 

3x = 13 

x  = 13 / 3