Question

a, [2x-6]:[4x-20]=0                  b,[x+2]+[x+2]+........+[x+15] =180   

Answer 1

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Answer 2

(2x -6) : (4x-20) = 0

=> 2x -6 = 0

2x = 6

x = 3

b) ( x + 1) + (x+2) + ...+ (x+15) = 180

x.15 + (1+2+...+15) = 180

x.15 + 120 = 180

x.15 = 60

x = 4

Answer 3

(2x -6) : (4x-20) = 0

=> 2x -6 = 0

2x = 6

x = 3

b) ( x + 1) + (x+2) + ...+ (x+15) = 180

x.15 + (1+2+...+15) = 180

x.15 + 120 = 180

x.15 = 60

x = 4

Answer 4

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