Answer:
Hi! The correct answer is 8/21!
Step-by-step explanation:
<em><u>~Simplify the expression~</u></em>
A.) 13. all you have to do is plug it into google
So say for example u have -7 - (-5), think of subtracting integers as adding the opposite, so ur adding the opposite of -5, the opposite of -5 is 5, so ur adding -7 and 5= -2
another one: -15 - (-18)
again, adding the opposite. -15 plus positive 18= 3
Pretty sure its 13x+1
if you're looking for x, minus the one so it's 13x=-1 and divide. hope it was helpful