Answer:1. x=11
Step-by-step explanation:
For the rest of the questions to do inverse operation! it says x+7=18.... ask yourself 7 plus what give me 18 use a calculator or paper subtract 18 from 7 and it gives you your answer which is 11.
For the ones like number 4. You do the same thing but instead of subtracting you add 6+3 it will give you 9 and to make sure sure add the numbers together. what ever number you get you plug the number into your equation and the statement should be true.
