Question

Given x + y=10 Ifx= -21, what is y?

Answer 1

Answer:y would equal 31 after addding 21 to both sides which eliminates x on one side and make 31 on the other

Step-by-step explanation:

Answer 2

$\large\text{Hey there!}$

$\large\text{x + y = 10}$

$\large\text{If \bf{\underline{x = -21}}}\large\text{ the replace x in the equation with -21}$

$\large\text{New equation: -21 + y = 10}\\\\\large\text{First: \bf{SIMPLIFY}}\large\text{ both sides of your equation}\\\large\text{y - 21 = 10}\\\\\large\text{Second: \bf{ADD}}\large\text{ by 21 on your sides}\\\large\text{y - 21 + 21 = 10 + 21}\\\\\large\text{Cancel out: -21 + 21 because it equals 0 and it DOESN'T gives you y }\\\\\large\text{Keep: 10 + 21 because it gives you the value of y}\\\\\\\large\text{10 + 21 = 31}\\\\\boxed{\boxed{\large\text{Answer: \boxed{\huge\text{y = 31}}}}}\huge\checkmark$

$\large\text{Good luck on your assignment and enjoy your day!}$

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