Question

daca x=3 si y+z=10 calculeaza :

a)7*x+7*y+7*z= b) 17*x+17*y+17*z-10= c)5*x+10*y+*z= d) 100*x-(9*y+9*)=

Answer 1

7x+7y+7z=7x+7(y+z)=7x3+7x10=21+70=91

17x+17y+17z-10=17x+17(y+z)-10=17x3+17x10-10=51+170-10=211

5x+10y+10z=5x+10(y+z)=5x3+10x10=15+100=115

100x-(9y+9z)=100x3-9(y +z)=300-9x10=300-90=210

Answer 2

a)7*x+7*y+7*z=7*x+7*(y+z)=7*3+7*10=21+70=91
b) 17*x+17*y+17*z-10= 17*x+17*(y+z)-10=17*3+17*10-10=51+170-10=211
c)5*x+10*y+10*z= 5*x+10*(y+z)=5*3+10*10=15+100=115
 d) 100*x-(9*y+9*z)=100*x-9(y+z)=100*3-9*10=300-90=210