Question

Find the value of x in these questions and verify the answes
1) 3(x+2)-2(x-1)=7. 2) 5(x-1)+2(x+3)+6=0

Answer 1

Answer:

1) x = -1

2) x = -1

Step-by-step explanation:

1) 3(x + 2) - 2(x - 1) = 7

=> 3x + 6 - 2x + 2 = 7

=> x + 8 = 7

=> x = 7 - 8 = -1

Verification:

3(-1 + 2) - 2(-1 - 1)

= 3(1) - 2(-2)

= 3 + 4 = 7

2) 5(x - 1) + 2(x + 3) + 6 = 0

=> 5x - 5 + 2x + 6 + 6 = 0

=> 7x + 7 = 0

=> 7x = -7

=> x = -7/7 = -1

Verification:

5(-1 - 1) + 2(-1 + 3) + 6

= 5*(-2) + 2(2) + 6

= -10 + 4 + 6

= 0

Answer 2

Answer:

1)x=(-1)

2)x=(-1)

Step-by-step explanation:

1)3(x+2)-2(x-1)=7

3x+6-2x+2=7

3x-2x+2+6=7

x+8=7

x=7-8=(-1)

To check,

LHS:

3(x+2)-2(x-1)

3(-1+2)-2(-1-1)

3*1-2*-2

3+4

7

LHS=RHS=7

Hence, verified.

2)5(x-1)+2(x+3)+6=0

5x-5+2x+6+6=0

5x+2x+6-5+6=0

7x+7=0

7x=-7

x=-7/7

=-1

To check,

LHS:

5(x-1)+2(x+3)+6

5(-1-1)+2(-1+3)+6

5*-2+2*2+6

-10+4+6

-10+10

0

LHS=RHS=0

Hence, verified.

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