Question

Helppp and explain than you

Answer 1

1) x = 2

Explanation:

Hope it helps. I'll try to solve the second one too

Answer 2

9514 1404 393

Answer:

1. x = 2
2. (-5, 4, 6)

Explanation:

1. Substitution can work for this.

2x +3(4x -5) = 13

14x = 28 . . . . . add 15

x = 2 . . . . . . . divide by 14

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2. The equation z=6 eliminates all but the 1st and 3rd choices. Using that value in the first equation gives ...

x + y + 6 = 5

x + y = -1

Only the 3rd choice satisfies this equation.

(x, y, z) = (-5, 4, 6)