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Answers
Answer:
4 . (i) x + 4= 9
(ii) y - 2 = 8
(iii) 10a = 70
(iv) b/5 = 6
(v) (3/4)t = 15
(vi) 7m + 7 = 77
(vii) (1/4)x - 4 = 4
(viii) 6y - 6 = 60
(ix) (1/3)z = 3 = 30
Step-by-step explanation:
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2 Q) I) n+5=19 (n=1)
A) n= 19- 5( transposing+5 to the opposite side)
n=14 ( n= 1) is not solution
II) 7n +5=19 ( n=-2)
A)7n=19-5(transposing + 5 to the opposite side)
7n=14
n= 14/7.
n=2 (n=-2) is not solution
III)7n+5=19(n=2)
A) 7n=19-5(transposing + 5 to the opposite side)
7n=14
n=14/7
n=2(n=2) is solution
IV)4p-3=13(p=1)
A)4p=13+3(transposing -3 to the opposite side)
4p=16
p=16/4
p=4 (p=1) is not solution
V)4p-3=13(p=-4)
A)4p=13+3(transposing -3 to the other side)
4p=16
p=16/4
p=4 (p=-4) is not solution
VI)4p-3=13 (p=0)
A)4p=13+3(transposing -3 to the other side)
4p=16
p=16/4
p=4(p =0)is not solution
4Q)I) sum of numbers X and 4 is 9
A) sum means addition
X+4=9
X=9-4=5(transposing + 4 to the other side)
X=5
II) the difference between Y and 2 is 8
A) difference Y-2=8
Y=8+2=10 (transposing -2 to the other side)
Y=10
III) 10 times of a is70
A) Ax10=70
A=70÷10(transposing X 10 to the other side)
A=10
IV) the number b divided by 5 gives 6
A)B÷5=6
B=6×5=30(transposing÷5 to the other side)
B=30
V) three fourth of t is 15
A) equation 3t/4=15
VI) seven times m plus 7 is equal to 77
A) 7×m+7=77
7m=77-7=70(transposing plus 7 to the other side
7m =70
m=70/7
m=10
VII) one fourth of number minus 4 gives 4
A)the number be x
1X/4-4=4
1X/4=4+4
1X/4=8
X=8
check
1×8/4-4=4
8/4-4=4
4/4=4
=4
VIII) you take away vi from 6time y, you get 60
A)6y-6=60
6y=60+6
6y=66
y=11
IX) if you add 3 to the of z, you get 30
A)3+z /3=30
z/3=30-3=27
z/3 27=81
and
1)x+4=9
2)y-2=8
3)10a=70
4)B/5=6
5)(3/4)t=15
6)7×m+7=77
7)(1/4)x-4=4
8)6y-6=30
9)(1/3)z=30