Question

Ram add 3 x -5 and - 9 X + 7 and subtract - 2 X + 9 from the sum of obtained he is writes his answer 10 x - 7 ls his answer correct if not correct write the correct answer

Answer 1

(3x+5)+(-9x+7)=-6x+12
(-6x+12)-(-2x+9)=-4x+3
So the correct answer is -4x+3

Answer 2

3x-5+(-9x+7)
=3x-5-9x+7
=2-6x.
now, subtract- 2x+9 from -6x+2
-6x+2-(-2x+9)
-6x+2+2x-9
-4x-7

so, ram answer was not correct