Write the following equations in the form ax+b.
a) 4x+7+2x+5
Combine like terms: 4x+2x and 7+5
We get, 6x+12, which matches the form ax+b.
b) 4x-7+2x-5
Combine like terms: 4x+2x and -7-5
We get, 6x-12, which matches the form ax+b.
c) 4x-7-2x-5
Combine like terms: 4x-2x and -7-5
We get, 2x-12, which matches the form ax+b.