please help me find out the answer do all
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please help me find out the answer do all
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Answer:
1. 4(x -2) = 2x +10
=> 4x - 8 = 2x + 10
4x -2x = 10 +8
2x = 18
x = 18/2
x = 9
_____________
2. 8(x + 11) = 100
=> 8x + 88 = 100
8x = 100-88
8x = 12
x = 12/8
x = 2
_____________
3. 5-x /2 = 10
=> 5 -x /2 × 2 = 10 × 2
5-x = 20
x = 20/5
x = 4
_____________
4. 3x - 5 = 2x + 4
=> 3x -2x = 4 +5
1x = 9
x = 9
______________
5. 1/3 x -5 = x + 2
=> 1x/ 3 - 5 = x + 2
x /3 -5 = x + 2
x /3 -5 + 5 = x + 2 + 5
x/3 = x + 7
x/3 × 3 = x + 7 × 3
x = x + 21
2x = 21
x = 21
_______________
________________
que 4th
1. 6 is a root of 3y = 18
=> y = 18/3
y = 6
Yes, 6 is a root
__________________
2. -9 is a root of x -9 = 0
=> x -9+ 9 = 0+9
x = 9
No, -9 is not a root
________________
3. -2 is a root of p² -9 = 0
=> p² -9 +9 = 0+ 9
p² = 9
p = √9
p = 3
No, -2 is not the root
___________________
4. 3 is a root of 6x = 18
=> x = 18/6
x = 3
Yes, 3 is a root of 6x = 18
___________________
Que. 5th
1. -11 = 12 + x
=> 12 + x = -11
12 + x + 11 = -11 +11
23+ x
x = 23
_____________
2. x/ 5 + x/2 = 7
=>x × 2 + x × 5 = 7
2x + 10 = 7
2x + 10 - 10 = 7 - 10
2x = 3
x = 3/2
_______________
3. p/6 = 2
=> p/6 × 6 = 2 × 6
p = 12
________________
4. 40 = 5(2 + y)
=> 40 = 10+y
10 + y = 40
10 -10 + y = 40 -10
y = 30
_________________
5. 2(x + 6) = 12
=> 2x + 12 = 12
2x + 12 - 12 = 12 - 12
2x = 0
x = 0/2
x = 0
__________________
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