1 ERRE
Yoshi completed a table with the justifications for each step of solving the equations = 112 Does each of Yoshi's
justifications fit with the corresponding step?
Step
Justification
1. Given
1
11. -S= 112
2
2 / 1
12. Inverse property of multiplication
2.
= 112
1 | 2
2 1
3. Associative property of multiplication
13
s = 112
1 2
14. 1s=
224
1
4. Inverse property of multiplication
5.5 = 224
5. Identity property of multiplication
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Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.