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wayneh24
31.10.2019 •
Mathematics
The number of girls in cobbs class is 2 less than 3 times the number of boys. she has 26 students in her class how many are boys
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Ответ:
7 are boys
Step-by-step explanation:
Make a system of equations where g is for girls and b is for boys.
b+g=26
g=3b-2
Substitute "3b-2" in for "g" in the first equation.
b+(3b-2)=26
Rewrite without the parentheses because it's addition and not multiplication.
b+3b-2=26
Combine like terms.
4b-2=26
Add 2 to both sides.
4b=28
Divide by the coefficient of the variable to get it alone.
b=7
Ответ:
answer:
32
step-by-step explanation:
you can do 5+27 which equals 35 so then u have ur anwser