Answer:
1.) 7a - 21 - 8a ≥ 33
7a - 8a ≥ 33+21
-a ≥ 33+21
-a ≥ 54
a ≤ -54
—a ≤ -54
2.) 9b + 8 < 170
9b < 170 - 8
9b < 162
b < 18
—b < 18
3.) 12c - 24 ≤ 4c - 88
12c - 24 - 4c ≤ - 88
12c - 4c ≤ 88 + 24
8c ≤ - 88 + 24
8c ≤ - 64
c ≤ - 8
—c ≤ - 8
4.) 14d > - 70 - 70
14d > - 140
d > - 10
—d > - 10
5.) 89. 43656 ≥ 41 + e
89. 43656 ≥ 43. 71828
—89. 43656 ≥ 43. 71828
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Answers & Comments
Answer:
1.) 7a - 21 - 8a ≥ 33
7a - 8a ≥ 33+21
-a ≥ 33+21
-a ≥ 54
a ≤ -54
—a ≤ -54
2.) 9b + 8 < 170
9b < 170 - 8
9b < 162
b < 18
—b < 18
3.) 12c - 24 ≤ 4c - 88
12c - 24 - 4c ≤ - 88
12c - 4c ≤ 88 + 24
8c ≤ - 88 + 24
8c ≤ - 64
c ≤ - 8
—c ≤ - 8
4.) 14d > - 70 - 70
14d > - 140
d > - 10
—d > - 10
5.) 89. 43656 ≥ 41 + e
89. 43656 ≥ 43. 71828
—89. 43656 ≥ 43. 71828