Question

Please help me this is impossible

Answer 1

We need to distribute the parenthesis before we do anything. 0.02(x+20)=0.02x+0.4; now let's put this into the equation.

2.4+0.02x+0.4-4.8=-9; this is all about making sure we get x on one side, isolated. We need to add all the like terms.

0.02x-2=-9; let's add 2 to both sides. 0.02x=-7; let's divide each side by 0.02 so that we can have x by itself. x=-350; let's plug -350 in as in the original equation to make sure that is our answer.

2.4+0.02(-350+20)-4.8=-9; let's add the parenthesis. 2.4+0.02(-330)-4.8=-9; let's multiply. 2.4-6.6-4.8=-9; let's subtract. 2.4-6.6=-4.2-4.8=-9

So, x=-350.

Answer 2

1. Combine like terms, so add 2.4 to -4.8 to get -2.4
So now you should be left with .02(x+20)-2.4=-9
2. Now eliminate the -2.4 by adding 2.4 to both sides, getting .02(x+20)=-6.6
3. Multiply everything by 50 to make x+20=-333, since 50×.02=1
4. subtract 20 from both sides to get x=-353