Question

Paula solved the equation 7+x=10 so x= 10 and got 17, but she is not certain if she got the correct answer. How could you explain Paula's mistake to her? please help guys I got a D in math

Answer 1

Paula should have solved for x. So 7+x=10 would be

-7 -7

X=3 to check7+3=10

10=10

Answer 2

7+x 7+x=10 x=3 explaination you must SUBTRACT 7 from both sides of the equation 7`-7 +x=10-7 x=3