Answer:
solution and answer
1.) 27 = 9×
27 9×
9 = 9
x = 3 <that is the answer
2.) 200 + 50 = a + 250
250 = a + 250
250 - 250 = a + 250 - 250
a = 0 <that is the answer
3.) 27 + c = 180 + 3
c + 27 = 180 + 3
c + 27 = 183
c + 27 - 27 = 183 - 27
c = 156 <that is the answer
4.) 4n + 4 = 28
4n + 4 - 4 = 28 - 4
4n = 24
4n 24
4 = 4
n = 6 <that is the answer
5.) 6 = 2m - 8
6 + 8 = 2m - 8 + 8
14 = 2m
14 2m
2 = 2
m = 7 <that is the answer
6.) 450 - 30 = z + 29
420 = z + 29
420 - 29 = z + 29 - 29
z = 391 <that is the answer
7.) 8 + 16 = 36 + 12
8 = 2³
12 = 2³ • 3
16 = 2⁴
36 = 2² • 3²
so lowest common multiple must be 2⁴ • 3²
or 144 <that is the answer
8.) 4m + 7 = 75
4m + 7 - 7 = 75 - 7
4m = 68
4m 68
m = 17 <that is the answer
9.) 3y = 100 - 28
3y = 72
3y 72
3 = 3
y = 24 <that is the answer
10.) 8m = 100 + 4
8m = 104
8m 104
8 = 8
m = 13 <that is the answer
Explanation:
hope it helps
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Answers & Comments
Answer:
solution and answer
1.) 27 = 9×
27 9×
9 = 9
x = 3 <that is the answer
2.) 200 + 50 = a + 250
250 = a + 250
250 - 250 = a + 250 - 250
a = 0 <that is the answer
3.) 27 + c = 180 + 3
c + 27 = 180 + 3
c + 27 = 183
c + 27 - 27 = 183 - 27
c = 156 <that is the answer
4.) 4n + 4 = 28
4n + 4 - 4 = 28 - 4
4n = 24
4n 24
4 = 4
n = 6 <that is the answer
5.) 6 = 2m - 8
6 + 8 = 2m - 8 + 8
14 = 2m
14 2m
2 = 2
m = 7 <that is the answer
6.) 450 - 30 = z + 29
420 = z + 29
420 - 29 = z + 29 - 29
z = 391 <that is the answer
7.) 8 + 16 = 36 + 12
8 = 2³
12 = 2³ • 3
16 = 2⁴
36 = 2² • 3²
so lowest common multiple must be 2⁴ • 3²
or 144 <that is the answer
8.) 4m + 7 = 75
4m + 7 - 7 = 75 - 7
4m = 68
4m 68
4 = 4
m = 17 <that is the answer
9.) 3y = 100 - 28
3y = 72
3y 72
3 = 3
y = 24 <that is the answer
10.) 8m = 100 + 4
8m = 104
8m 104
8 = 8
m = 13 <that is the answer
Explanation:
hope it helps