Answers

2015-12-09T00:27:12+08:00
Solution: 3x + x = 180 
4x=180 
x=180/4 
x=45 

3(45) + 45 = 180 
135 + 45 = 180 
180 = 180
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2015-12-09T05:07:37+08:00
Its solving equality where you should find the value of x

3x+x=180
you should equate the equation in which the constant value is in the one side of the equation and the variables are in the another side

4x=180
4x/4=180/4
x=45

you could use checking to be sure wethear ur answer balance the equation

3x+x=180
3(45)+45=180
135+45=180
180=180
that means that 45 is the exact value of x ;)
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