Answer:
Talib is correct i think
Step-by-step explanation:
The last one Does not have an awnser there is no like terms
19: He multiplied instead of dividing which will make a totally incorrect answer
Step-by-step explanation:
4(5x-9)=-2(x+7)
4*5x-4*9=-2*x-2*7
20x-36=-2x-14
20x+2x=-14+36
22x=22
x=22/22
x=1