Explanation

(56)^2 - (37)^2 / 56-37

3136 - 1369 / 19

1767

93

Explanation

4 × 3 + 3 = 15.

First, multiply 4 by 3 to get 12, then add 3 to get 15.

Explanation

Yes, every rational number does have an additive inverse.

By definition, the additive inverse of a number, x, is the number y that adds to x to give the additive identity of 0.

Notice that if we add any number, x, to its negative, -x, we will get 0.

ND5-07-2023

Explanation

Let dosage after decrease= x

Given condirion :

30% of 340 = [30/100] x 340 = 102

Now x= 340 – 102 = 238

Explanation

1/2 represents a fraction indicating "half".

It means one part out of two equal parts of a whole.

Explanation

M.P. of an electric Iron = Rs. 690

After Discount, S.P. = 90% of 690 = Rs. 621

Gain = 8%

C.P of an electric Iron = 621×100100+8

= 621×100108= Rs.575

No Discount, gain of Iron = 690 - 575 = Rs. 115

gain % = 115575×100=20

Explanation

The commutative property of addition says that changing the order of addends does not change the sum.

Explanation

Let the number be x

Then,

⇔23x−50=14x+40⇔23x−14x=90⇔5x12=90⇔x=(90×125)⇔x=216

Explanation

40x/100 +42 =x

4x/10 +42 =x

42 = 10x -4x/10

420=6x

x =70

Explanation

Let's simplify and compare:

26(27 + 29 + 32) = 26 × 27 + 26 × 29 + 26 × 32

Now, looking at the options:

26(27) + (29 + 32)(26) = 26 × 27 + 26 × 29 + 26 × 32