please give answer fast
Answers
Answer:
- a) 7/3
- b) 300(or) 182
- c) 12
- d) 5
- e) 8
- f) 31
- g) 10
- h) 5/2
- I) -3/4
- j) 3/4
Answer:
Step-by-step explanation:
a. 3 (x - 1) + 7 = 11
our goal here is to make x be on its own side with no other numbers.
3 (x - 1) + 7 = 11
step 1: multiply x and -1 by three. ↓
3x - 3 + 7 = 11
step 2: simplify. add -3 to 7. ↓
3x + 4 = 11
step 3: subtract 4 from both sides. - 4 ↓ - 4
3x = 7
step 4: divide both sides by 3. ↓
x = 7/3
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b. 14 = (7x / 10) - 8
step 1: add 8 to both sides. ↓
22 = 7x / 10
step 2: multiply both sides by 10 ↓
220 = 7x
step 3: divide both sides by 7 ↓
220 / 7 = x OR rounds up to 31.429
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c.
step 1: add 2 to both sides +2 ↓ +2
step 2: multiply both sides by 5 ↓
step 3: simplify ↓
step 4: add 3 to both sides +3 ↓ +3
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d. 20 - (2x - 5) = 25
step 1: add 2x-5 to both sides +(2x - 5) ↓ +(2x - 5)
20 = 25 + (2x - 5)
step 2: subtract 25 from both sides -25 ↓ -25
-5 = 2x - 5
step 3: add 5 to both sides +5 ↓ +5
0 = 2x
step 4: divide both sides by 2 ↓
step 5: simplify ↓
0 = x
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e.
step 1: add 1 to both sides +1 ↓ +1
step 2: multiply both sides by 3 ↓
step 3: simplify ↓
step 4: add 7 to both sides +7 ↓ +7
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f.
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g.
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h.
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i.
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j.
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