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(5p+7)+(3p-5)=90

We move all terms to the left:

(5p+7)+(3p-5)-(90)=0

We get rid of parentheses

5p+3p+7-5-90=0

We add all the numbers together, and all the variables

8p-88=0

We move all terms containing p to the left, all other terms to the right

8p=88

p=88/8

p=11

| (9r+2)+70=90 | | 84+(5m+1)=180 | | n+10=232 | | 5x+13=5x+9 | | 5x-2=3G | | 4x+6=6x-11=180 | | 3x+5=8x-12=180 | | (2x+33)=(6x-3) | | 7x+6=(2x+16 | | x+132+39=180 | | x+79+21=180 | | x+37+87=180 | | -4.x=8 | | 147x3=441 | | t+21/5.6=84 | | 9x-40=00 | | x=5.99*6.01 | | (2x+2)(x-1)=198 | | 340/20=x | | 10^b=10.000.000 | | 1/16^x-1=2^3x-1 | | 3.5(5x+4)=17.5x+14 | | 8.5x=17.5x | | y^2+17y-9=0 | | 7+a=24.50 | | x^2-10x=315 | | (7x+5)=(8x-5)=90 | | 16x+6=3x+3 | | x^2+33=37 | | n/54=1/18 | | -2.7b+1.4=-1.0b-7.1 | | (6x-5)=(2x+35) |

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