8b + 16 = 64
subtract 16 from both sides of the equation
8b + 16 - 16 = 64 - 16
8b = 48
divide both sides integers by 8
(8/8)b = 48/8
b = 6
----------------check in original equation by substituting 6 in for b
8(6) + 16 = 64
48 + 16 = 64
64 = 64
-------------checks
The answer is 64.
a-16 = a/4+2 Multiply all terms by 4: 4a-64 = a+8 4a-a = 8+64 3a = 72 a = 24
x2 + 12x - 64 = 0 ∴ (x + 16)(x - 4) = 0 ∴ x ∈ {4, -16}
16
16 as a percentage of 64 = 16/64 * 100 = 25 %
The answer is 64.
2048
64
a-16 = a/4+2 Multiply all terms by 4: 4a-64 = a+8 4a-a = 8+64 3a = 72 a = 24
-64
-8x + 6 = -58 -8x = -64 x= -64/-8 x = 8
x2 + 12x - 64 = 0 ∴ (x + 16)(x - 4) = 0 ∴ x ∈ {4, -16}
64 = 1024
16
16 as a percentage of 64 = 16/64 * 100 = 25 %
(x - 16)(x + 4) = 0 so x = -4 or 16
It is: 4 times 16 = 64