Answer to Question #181682 in Algebra for sinit

Question

solve each equation for the given variable

a) b - 8 = -4 b) 25x + 2 = 77 c) k + 7 = -4 d) 5w/3 = 15 ( this is 5w over 3)

Answer 1

(a) $b-8=-4\Rightarrow b=8-4=4$

(b) $25x+2=77\Rightarrow 25x=77-2\Rightarrow 25x=75\Rightarrow x=3$

(c) $k+7=-4\Rightarrow k=-7-4=-11$

(d) $\dfrac{5w}{3}=15\Rightarrow w=\dfrac{15\times 3}{5}=9$