An unknown number b is 10 more than an unknown number k. The number b is also k less than 8. The equations to find k and b are s
hown below. b=k+10
b=-k+8
Which is a correct step to find k and b?
O Write the points where the graphs of the equations intersect the x-axis.
O Write the points where the graphs of the equations intersect the y-axis.
O Add the equations to eliminate k.
O Multiply the equations to eliminate b.
Adding the equations, you get 2b=18, which you can solve for b. Afterward, you can substitute this value of b back into either equation to solve for k.
Lets change the equation. 3 -(3*6) +2 Multiply 3*6 first and get 18 3 -18+2 - Same as 3-(18)+2 -15 +2 3 -18 is the same as doing 18 -3, but with the negative Do the same to -15 +2
