Question

((100×2) - (60×2)):((90×2)-(70×3))​

Answer 1

$\frac{100^{2}-60^{2}}{90^{2} -70^{2} } =\frac{(100-60)(100+60)}{(90-70)(90+70)}=\frac{40*160}{20*160}=\frac{40}{20}=2$

Answer 2

((100х2)-(60х2)):((90х2)-(70х3))=

1)100х2=200

2)60х2=120

3)200-120=80

4)90х2=180

5)70х3=210

6)180-210=-30

7)80:(-30)=-2.666666667

Answer 3

To solve the expression, follow the order of operations (PEMDAS/BODMAS) which stands for Parentheses/Brackets, Exponents/Orders, Multiplication, and Division (from left to right).

Let's go step by step:

Step 1: Perform the operations inside the parentheses/brackets. (100×2) - (60×2) = 200 - 120 = 80 (90×2) - (70×3) = 180 - 210 = -30

Step 2: Perform the division operation. 80 ÷ -30 = -2.666666...

So, the value of the expression is approximately -2.666666... (repeating decimal).

Answer 4

Let's solve the expression step by step:

((100 × 2) - (60 × 2)):((90 × 2) - (70 × 3))

First, perform the operations within the parentheses:

(200 - 120):(180 - 210)

Next, perform the operations in the numerator and denominator:

80:(-30)

Finally, simplify the expression:

80 ÷ -30 = -2.666...

So, ((100 × 2) - (60 × 2)):((90 × 2) - (70 × 3)) is approximately equal to -2.666... or -2.67 (rounded to two decimal places).