You'd know that n does not equal 3 by substituting it.
- 7 * 3 - 21 = -63
-21 - 21 = -42 (not -63)
-7n-21=-63
Add 21 to both sides.
-7n - 21 + 21 = -63 + 21
-7n = -42
n = -42 / -7
n = 6
n
1.)solve for n:-7n-21=-63
my answer: n=3
is this correct? please explain
2.)identify the x and y int for te equation 3x-4y=12.
1 answer