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write the exprssion in stadered from by expanding and collecting like trems
a. 4(8m-7n)+ 6(3n-4m)
b. 9(r -s)+ 5(2r - 2s)
c. 12( 1-3g) + 8 (g + f)

Sagot :

a. 4(8m-7n)+6(3n-4m)= 32m-28n+18n-24m=8m-10n

b. 9(r-s)+5(2r-2s)=9r-9s+10r-10s=19r-19s

c. 12(1-3g)+8(g+f)=12-36g+8g+8f=-28g+8f+12