7(0.2b+0.9)=0.5b
–
5z–12=14+14–z
9n+3(1.2n+0.5)=15.6n
2c+1.8=2.4c–1
round 83 to nearest 10
3(16–2m)=3(6m–12)
Simplify : 1/(a + 1) - a/(a ^ 2 - 1) - (a ^ 2)/(1 - a ^ 4) .
round 83 tonearest 10
3(
y+4)=
(
14+4y)
