Answer:
-5
Step-by-step explanation:
this is the answer because if you times 6*-7 then it equals to -42 then if you times 6*-x then it equals to -6 which the equation will be -1-7x=36-42-6x so you add 6 to both sides and you will get 1x then you add common terms 36-42 which equals to -6 then you add the -1 to both sides which that will equal to -5 so the equation will look like this 1x=-5 which you have to divide 1 on both sides then it equals to -5
