Question

from the set { -10,-2,2},use sustitution to determine which value of x makes the equation true. 10x=-20

Answer 1

You can solve it and find the answer directly
10x = -20
x = -20/10
x = -2

But if you want to do it by substitution.
If x = -10
10(-10) = -20?
-100 =/= -20

If x = -2
10(-2) = -20?
-20 = -20

If x = 2
10(2) = -20?
20 =/= -20

Answer 2

ok thx

Answer 3

from the set {-67, 10, 67} use substitutionto determine which value ofx makes the equation true.