Mathematics, 23.01.2020 11:31, bm42400

4) which linear system has been correctly solved for one of the variables from the following system?
2x - y = -1
2x + y = -7

a. 2x - y = -1 y = 2x - 7
b. 2x - y = -1 y = -2x + 7
c .y = 2x + 1 2x + y = -7
d. y = -2x + 7 2x + y = -7

Answers: 1

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4) which linear system has been correctly solved for one of the variables from the following system?...