4. Solve the following equations and check your result in each case.
i. 3x + 3 = 30
ii. 2p + 14 = 0
iv. 3m = 21
iii. 5x + 10 =-15
vi. 4x + 3 = 7x - 3
V. 5y=0
Answers
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Answer:
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Answer:
3x+3=30
3x=30-3
3x=27
x=27/3
x=9
Check
3 × 9 + 3= 30
27+3 =30
30=30
2p+14=0
2p=0-14
2p= -14
p= -14/2
p= -7
Check
2×-7 + 14=0
-14+14= 0
0 =0
3m=21
m =21/3
m=7
Check
3×7=21
21=21
5x+10= -15
5x = -15 - 10
5x = - 25
x= -25/5
x= -5
Check
5×-5+10=-15
-25 +10=-15
-15= -15
4x+3=7x-3
4x-7x= -3-3
-3x =-6
x= -6/-3
x=2
Check
4 × 2 +3 =7×2-3
8+3=14-3
11=11
5y=0
y=0/5
y=0
Check
5×0=0
0=0
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