Question

A student is trying to solve the set of two equations given below:

Equation A: x + z = 6
Equation B: 2x + 3z = 1

Which of the following is a possible step used in eliminating the z-term? (5 points)


Multiply equation B by 3.
Multiply equation A by 2.
Multiply equation B by 2.
Multiply equation A by –3.

Answer 1

x=17 other answer expert verified (sniff, sniff) breaks out in tears

(bad joke)

Answer 2

Equation A : x + z = 6
Equation B : 2x + 3z = 1

Possible step used in eliminating in z-term.

Multiply equation A by -3.

-3(x +z) = -3(6)
-3x - 3z = -18

-3x - 3z = -18
2x + 3z = 1
-x = -17
÷ -1 ÷ -1
x = 17