If a = B, then the correct number in the following formula is a + 3 = B + 3 2A = 2b-a = - B 3a-2 = 3b-2 A / C = B / C, where the correct number is

If a = B, then the correct number in the following formula is a + 3 = B + 3 2A = 2b-a = - B 3a-2 = 3b-2 A / C = B / C, where the correct number is

Only a △ C = B △ C,
Because division is meaningless when C = 0,
So there are four correct ones

To know | A-2 | + | - B + 7 | + | C-3 |, find 3A + 2B + 4C

Given | A-2 | + | - B + 7 | + | - C-3 | = 0, find the value of 3A + 2B + 4C
The absolute value is a non negative number. Therefore, adding three absolute values equals 0 only means that each absolute value equals 0
∵ |a－2 |＝0,|－b＋7 |＝0,| c－3 |＝0
a＝2,b＝7,c＝3
3a＋2b＋4c＝3×2＋2×7＋4×3＝6＋14＋12＝32

3a-2b-c+d=3a-( )

3a-2b-c+d=3a-(2b+c-d)

If a / 2 = B / 3 = C / 4, then (3a + 2B + C) / A

Let a = 2x, then B = 3x, C = 4x, so the original formula = (6x + 6x + 4x) / 2x = 16x / 2x = 8

(3a-2b)^2

(3a-2b)²
=9a²-12ab+4b²

Solve the equation a * b = 3A + 4b, given 7 * x = 45, find X

21+4x=45.x=6

Given that 1 ＜ = a + B ＜ = 5, - 1 ＜ = A-B ＜ = 3, what is the value range of 3a-2b

3a-2b=1/2(a+b)+5/2(a-b)
1/2 < 1/2(a+b) < 5/2
-5/2 < 5/2(a-b) < 15/2
-2< 3a-2b

It is known that a is equal to 2B plus 6. If a is less than 0, what is the value range of B? If B is less than or equal to 3a, what is the value range of a

Because a = 2B + 6

Given that a is greater than or equal to B is greater than 0 and 3a + 2b-6 = AC + 4b-8 = 0, then the value range of C is

3a+2b-6=ac+4b-8=0
3a+2b-6=0
2b=6-3a b=(6-3a)/2
And because a is greater than or equal to B is greater than 0,
b=(6-3a)/2>0
6>3a
So 00

(b/2a^2)^3÷(2b^2/3a)^0*(-b/a)^-3

(b/2a^2)^3÷(2b^2/3a)^0*(-b/a)^-3
=b^3/8a^6÷1 *(-a^3/b^3)
=-1/8a^3
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