Answer:
5a+5b
Step-by-step explanation:
Multiply each variable in the parenthesis by the number outside.
Hope this helps.
Cross multiply the denominators by the numerators. In other words, 12 times 3 and 7 times x (x, being our missing number).
We end up with 36 and 7x.
Divide both sides by 7.
36/7x = 5.14
x = 5.14
Hope this helps!
Do a ratio problem:
42/60=x/320
x= 224 students ride the bus to school