Under the presidency of Jose Herrera, the Mexican government voted against declaring war on the United States.
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60

step-by-step explanation:

theres no picture: /

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative