Mechanical or Chemical: Lichens growing on rocks secrete weak acids to dissolve the rock and create small pits in the rock??

common sense was a pamphlet by thomas paine which advocated the independence of the thirteen colonies from great britain.

1.3x - 2 - (3.3x + 5) = 2x + 1

1.3x - 2 - 3.3x - 5 = 2x + 1

-2x - 7 = 2x + 1

-7 = 4x + 1

-8 = 4x

x = -2

whose power in the senate is equal to the power of the speaker of the house?

i think you may have asked this twice, but i answered one of the