find the measure of each interior angle using given info.

1.2(2x-15)+2(x)=180

2.2x+20+3x-10+2x-10+2x=180

3.2x+16+x+14+2x+16+x+14=180

4.7x+4x+7x+4x+7x+7x

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- May 8th 2012, 10:19 PMChelseaaaAnn02031994Please help me i suck at math!
find the measure of each interior angle using given info.

1.2(2x-15)+2(x)=180

2.2x+20+3x-10+2x-10+2x=180

3.2x+16+x+14+2x+16+x+14=180

4.7x+4x+7x+4x+7x+7x - May 9th 2012, 12:31 AMGokuRe: Please help me i suck at math!
Add like terms:

for No. 1.

2(2x-15)+2(x)=180

2(2x - 15) = (4x - 30)

2(x) = 2x

Now add Both:

4x - 30 + 2x = (4x + 2x) - 30 --- Here you are grouping like terms.

= 6x - 30

Now:

6x - 30 =180

6x = 210

x= 210/6