Respuesta :
We need to get X all by itself
x-7=11
+7 +7
x=18
the answer is 18
x-7=11
+7 +7
x=18
the answer is 18
x-7=11, if you add seven on to both sides, it cancels out the - and changes 11 to 18. This makes the equation x=11+7. This adds up to 18. x=18. 18-7=11