Explanation

3x + 1 = x

3x - x = -1

2x = -1

x = -1/2

Last verified on 12-10-2026

Explanation

If x = -3, then

x^2 + 3x + 3

= (-3)^2 + 3*(-3) + 3

= 9 - 9 + 3

= 3

Last verified on 12-10-2026

Explanation

7x = 91

x = 91 / 7

x = 13

Last verified on 10-10-2026

Explanation

Given:

4x − 2y = 10 ...(1)

2x + y = 5 ...(2)

Multiply equation (2) by 2:

4x + 2y = 10 ...(3)

Add equations (1) and (3):

8x = 20

x = 20 ÷ 8

x = 2.5

Last verified on 09-10-2026

Explanation

(x-2)/3 + (x-4)/10 = x/2

Take LCM of 3,10,2 = 30 and multiply both sides by 30

10_(x-2) + 3_(x-4) = 15*x

10x - 20 + 3x - 12 = 15x

13x - 32 = 15x

-32 = 15x - 13x

-32 = 2x

x = -16

Last verified on 07-10-2026

Explanation

Maryam = x

Bilal = x - 3 (because Maryam has 3 more than Bilal)

Jameel = x + 5 (because Maryam has 5 less than Jameel)

Jameel + Bilal = (x + 5) + (x - 3) = 2x + 2

Last verified on 07-10-2026

Explanation

Explanation

Given:

2x + 4 /x =9

Multiply both sides by x:

x ( 2x + 4/x) = 9x

Now multiply each term:

2x^2 + 4x/x =9x

Since x/x =1

2x^2+4=9x

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Explanation

|3| = 3, |−3| = 3, and 2² = 4.

|−3²| = |−9| = 9 → 3 − 3 − 4 − 9 = −13.

Last verified on 02-09-2026

Explanation

When we divide numbers with same base we subtract the powers. 

First 2^40 / 2^19 gives 2^(40-19) = 2^21. 

Then 2^21 / 2^13 gives 2^(21-13) = 2^8.

Last verified on 04-09-2026