Answer:
y = 8400000
Step-by-step explanation:
5y - (2x10^6) = 4 x 10^7
First you evaluate the exponent:
5y - (2 x 1000000) = 4 x 10^7
Next, you multiply the numbers,
5y - (2000000) - 4 x 10^7
Multiply:
5y - 2000000 = 4 x 10^7
Evaluate the exponent again:
5y - 2000000 = 4 x 10000000
Multiply:
5y - 2000000 = 40000000
Add 2000000 to both sides of the equation:
5y - 2000000 + 2000000 = 40000000 + 2000000
Simplify:
5y = 42000000
Divide both sides of the equation by 5:
5y/5 = 42000000/5
Cancel out the terms that are in both the numerator and denominator then divide the numbers:
y = 8400000
