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Q: 3 plus 6 plus m plus 12 plus 5 equals 30?

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12

subtracting gives 4x = -12 so x = -3

3 + 6 + 9 + 12 = 30

3

5 plus 25 equals 60. Need to solve for 5 plus 25 equals ?: 2 plus 10 equals 24 is equivalent to 2 × (1 plus 5) equals 2 × (12); and 3 plus 15 equals 36 is equivalent to 3 ×(1 plus 5) equals 3 × (12); thus 5 plus 25 equals ? is equivalent to 5 × (1 plus 5) equals 5 × (12); thus ? = 5 × 12 = 60.

N=3.

12

a=3

15 plus -3 equals 12 12 divided by -6 equals -2

a = 3

4x2 plus 3=11

8x+30=4x+18 -4x -4x 4x+30=18 -30 -30 4x=-12 4x/4=-12/4 x=-3

-9

5 + -8 = 3 + 12 -3 is not equal to 15

-12

12

b = 12 12(3)+3 = 39, use a calculator to find out

It is: 10 times 3 = 30

It equals 70

2x + 3y = 12 x = 1.45, so 2 * 1.45 + 3y = 12 2.9 + 3y = 12 3y = 12 - 2.9 = 9.1 y = 9.1/3 = 3.0333... or 91/30 or 3 1/30.

x=-24

12!

4a+3-a =12 4a-a = 12-3 3a = 9 a = 3

5x + 3 = -12 5x =-12-3 =-15 x = -3

If: -3a+2 = 12 Then: a = -3 and 1/3