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kodGreya [7K]
2 years ago
7

How to solve (2x-3)(3x+3)=36

Mathematics
2 answers:
mote1985 [20]2 years ago
7 0
Use the distributive property to multiply the two sets of parentheses. You should have learned this in Algebra 1.
Arisa [49]2 years ago
4 0
6x+6-9x+9=36

6 x -9x-3=36
-3x=39
X=-13
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The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was twice as old as Ben. How old are they both now?
Elan Coil [88]

Let us say that:

K = age of Kristen

B = age of Ben

 

From the problem, we make the equations:

eqtn 1: K + B = 32

eqtn 2: (K – 4) = 2 (B – 4)

 

Simplifying eqtn 2:

K – 4 = 2 B – 8

K = 2 B – 4

 

Plugging in this to eqtn 2:

(2 B – 4) + B = 32

3 B – 4 = 32

3 B = 36

B = 12

 

From eqtn 2:

K = 2 B – 4 = 2 (12) – 4 = 20

 

So Kristen is 20 while Ben is 12.

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Answer:

Step-by-step explanation:

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