EXERCISE
Solve the equations and check the solution.
(a) 2x + 5 = 3x + 1
(c) 5m + 2m + 4 = 3m - 11 + 8m
(e) 4p - 21 = -p/5
Answers
Answered by
0
Answer:
a) 2x + 5 = 3x + 1
5 - 1 = 3x - 2x
4 = x
therefore x = 4
b) 5m + 2m + 4 = 3m - 11 + 8m
7m + 4 = 11m - 11
4 + 11 = 11m - 7m
15 = 4m
15/4 = m
therefore m = 15/4
c) 4p - 21 = - p/5
4p + p/5= 21
21p/5 = 21
21p = 21×5
p = 21×5/21
p = 5
therefore p = 5
Answered by
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(a) 2x+5= 3x+1
5-1= 3x-2x
x=4
(c) 5m+2m+4 = 3m-11+8m
7m+4 = 11m-11
4+11 = 11m-7m
15=4m
m=15/4
m=3.75
(e) 4p-21 = -p/5
5(4p-21)=-p
20p-105= -p
20p+p=105
21p=105
p=105/21
p=5
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5-1= 3x-2x
x=4
(c) 5m+2m+4 = 3m-11+8m
7m+4 = 11m-11
4+11 = 11m-7m
15=4m
m=15/4
m=3.75
(e) 4p-21 = -p/5
5(4p-21)=-p
20p-105= -p
20p+p=105
21p=105
p=105/21
p=5
I hope It will help you...
And if you like please mark me as brainlist
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