Question

X=1
9x - 2y = - 5 solve with substitution

Answer 1

y = 7

Explanation:

9x - 2y = -5

Put x = 1 in for x.

9(1) - 2y = -5

Multiply 9*1, which equals 9.

9 - 2y = -5

Subtract 9 on both sides.

-2y = -5 - 9

Combine -5 and -9, which equals -14.

-2y = -14

Divide by -2 on both sides.

This means...

y = 7.

Answer 2

y = 7

Explanation:

1) Substitute X with 1

9 ( 1 ) - 2y = - 5

2) Simplify 19×1 to 9

9 − 2y = −5

3) Subtract 9 from both sides

−2y = −5 − 9

4) Simplify −5−9 to −14

−2y = −14

5) Divide both sides by −2.

y = -14 / -2

6) Two negatives make a positive.

y = 14 / 2

7) Simplify 14 / 2​​ to 7

y = 7