When ms. shreve solved an equation in class, she checked her solution and found that it did not make the equation true! Examine

Question

3 years ago

13

her work below and find her mistake. Then find the correct solution.
5(2×-1)-3×=5×+9
10×-5-3×=5×+9
7×-5=5××9
12×=4
×=1/3

1 answer:

Alex777 [14] · Answer 1 · 2022-01-11T20:48:59+03:00

6 0

The first part of the second line, she left the -5 there. The correct work and solution should be this:
5(2x-1)-3x=5x+9
7x−5=5x+9
2x-5=9
2x=14
x=7