Answer:
-10 and 7
Step-by-step explanation:
a) expand 2(x+3)
=2x+6
write equation again
2x+6=x-4
minus x from both sides
=
2x-x+6=x-x-4
x+6=-4
minus 6 from both sides
x+6-6=-4-6
x=-10
answer for a) is x=10
b) 4(5x-2)=2(9x+3)
expand both sides
20x-8=18x+6
minus 18x from both sides
20x-18x-8=18x-18x+6
2x-8=6
add 8 on both sides
2x-8+8=6+8
2x=14
divide by 2 on both sides to find x
x=7
