four
a = 1
c = 3
a + c = 1 + 3 = 4
c = 6 and d = 7
-c + 2 = 5 -c = 3 c = -3
-11
1/2 c plus 1 tbs
-8c + 1 = -3 => -8c = -3 + 1 => -8c = -2 => c = -2/(-8) => c = 1/4 = 0.25
C equals negative 1
50
C plus is between 3 and 3.2. C = 75% 0% < Plus < 5% 75%+0% < C Plus < 75%+5% 75 < C Plus < 80% 75%*4 < C Plus < 80% * 4 (3/4)*4 < C Plus < (4/5) * 4 3 < C Plus < 16/5 3 < C Plus < 3.2
z remains undefined.
-4-3i
c plus 8 equals 11; now subtract 8 from both sides, then c=3.
-3