First give step you will use to separate variable and
then solve the equations.
(a) x+2=4
(b) x + 5 = 7
(c) 2x - 3 = 5
(d) y + 5 = 27
(e) y - 7 = 0
(f) 7+ 5 = 5
(g) s-7=7
(h) 7-5 = + 5
(i) 31= 57
(j) 2x = 36
(k) y + 5 = 4
Answers
(a) x+2=4
x=4-2
x=2
(b)x+5=7
x=7-5
x=2
(c)2x-3=5
2x=5+3
2x=8
x=8/2
x=4
(d)y+5=27
y=27-5
y=22
(e)y-7=0
y=0+7
y=7
(f)7+5=5(wrong question)
12=5
(g)s-7=7
s=7+7
s=14
(h)7-5=5(wrong question)
2=5
(i)31=57(wrong question)
(j)2x=36
x=36/2
x=18
(k)y+5=4
y=4-5
y=-1
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Answer:
Step-by-step explanation:
a)x+2=4
Subtract 2 from both sides,
⇨x+2-2=4-2
x=2
(b) x+5 =7
Subtract 5 from both sides,
x+5-5 = 7 -5.
x=2
(c) 2x- 3 = 5
Add 3 to both sides
2x- 3+3 =5+3 =2x= 8
Now divide both sides by 2,
⇨
2
2
=
8
4
⇨x=4
(d) y+5=27
Subtract 5 from both sides
y+5-5=27-5
y=22
y-7= 0
e)Adding 7 to both sides
y-7+7=0+7
y=7
z+5 =5
f)Subtract 5 from both sides
z+5-5=5-5
z=0
g) S-7= 7
Adding 7 to both sides
s-7+7=7+7
S=14
(h)z-5=5
Adding 5 to both sides
Z-5+5=5+5
Z=10
i)3l= 57
Dividing both sides by
3
3
=
57
3
l=19
j)2x=36
Adding 5 to both sides by 2
2
2
=
36
2
x= 18
(k) y+5=4
Subtract 5 from both sides
y+5-5=4-5
y =-1