If we take the logarithm of both sides, then it is log(4^x) = log(128). Then from logarithm rules, this can be changed to: x*log(4) = log(128), then x = log(128)/log(4). You can punch this into a calculator and get the answer, but what if we use log base 2, we don't need a calculator. So log2(4) = 2, because 2² = 4. And log2(128) = 7, because 2^7 = 128. So we have x = 7/2 = 3.5, then you can check your answer: 4^3.5 = (4^3)*(4^.5). So 4 cubed = 64, and 4 raised to the 1/2 power is the square root of 4, which is 2. So 64 times 2 = 128.
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2*(4*4*4)=128
a + 4 = 10(a + 4) - 4 = 10 - 4a = 6
Divide 28 by 4. X = 7
7x + y = 4y = 4 - 7x
To solve the equation "What times 4 equals 3," you would need to divide 3 by 4. The answer is 0.75. This is because 4 multiplied by 0.75 equals 3.