For number two you make four over five a decimal witch is zero point eight and then you multiply it by 7 and that will get you 5.6
a=6, b=2
Step-by-step explanation:
Use simplification into substitution
We can now plug this value of <em>a</em> into the second equation.
Get rid of fractions in the numerators and/or denominators
Then we can match the denominators
Combine
Divide both sides by three
Get rid of fractions
Single out <em>b</em>
Now we can plug it into the equation
Now we can check it;
↑CORRECT
↑CORRECT
79+6= 85
85= 8 tens and 5 ones
I rest my case
It will take 16 months for her hair to grow 8 inches