Question

dada função f(x)=-2x+3 determine f (x) = -7

Answer 1

-7= -2x+3
2x=3+7
2x=10
x=10/2
x=5

Answer 2

f(x) = -2x + 3 determine f (x) = -7
-2x+3=-7
-2x=-7-3
-2x=-10 ×(-1)
2x=10 <<( o 2 tá multiplicando passa dividindo)
x=10/2
x=5