Simplify the expression 11+2/3(15-21a)
2 answers:
Answer:
21-14a
Step-by-step explanation:
You have to distribute the (2/3) into the (15-21a) then add it to the 11. So after distributing the (2/3) into the (15-21a) is (10-14a). Then add that to the 11
Answer:
-14a + 21
Step-by-step explanation:
11 + 2/3(15 - 21a)
Expand brackets.
11 + 2/3(15) + 2/3(-21a)
11 + 30/3 + -42/3a
Evaluate.
11 + 10 + - 14a
21 + - 14a
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Step-by-step explanation:
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Assume that, adult = x child = y x+2y = 35 (1st equation) 2x+3y = 60 (2nd equation) x = 35-2y (3rd equation) Substitute 3 into 2 : 2(35-2y) + 3y =60 70-4y +3y = 60 y = 10 x+2y = 35 x+2(10) =35 x +20 =35 x = 15 One adult = $15
Answer:
x = 3
Step-by-step explanation:
2 + 3x = 11
3x = 11 - 2
3x = 9 (divide both sides by 3 to get x)
3x/3 = 9/3
x = 3