Question

lesson: linear equations in one variable
please solve this problems 7, 8,9,10,11,12, urgently

Answer 1

7. consecutive multiples are x, x+9, x+18
x+x+9+x+18=999
=3x +27=999
= 3x =999-27=972
= X =972/3=324.(ans)

Answer 2

Answer 7:-
Let the first no. be= x
the second no. is = x+9
the third no. = x+18
The total sum = 999
x + x + 9 + x + 18 = 999
3x + 27 = 999
3x = 999 - 27
3x = 972
x = 972/3
x = 324
the first no. is = 324
the second no. is = 333
the third no. is = 342