Four times the sum of a number r and 4 is equal to 20 less than 10 times the number r. What is the value of r ? -mathematics
2 answers:
Answer:
r=6
Explanation:
4(r+4)=10r-20
now solve for r.
4r+16=10r-20
-4r -4r
16=6r-20
+20 +20
36=6r
/6 /6
6=r
Answer:
ah this says it is Spanish
Explanation:
how come you put a math metics one on Spanish?
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