book Maths Puzzle Numerical Ability

How would you find an answer to a problem like this 5(3x+8)=175

Read Solution (Total 1)

15x+40=175
15x=170-45
15x=125
x=8.3333
10 years agoHelpfull: Yes(0) No(0)

book Other Question

evaluate the function for the indicated value: f(x)=x2+2x-7 find f(-4) This is about factoring.

With this problem I had to factor out the greatest common factor, then factor the remaining polynomial if possible: then check it.

so here's the p