10.19+26.05-(16.05-9.81)
= 10.19+26.05-16.05+9.81
=(10.19+9.81)+(26.05-16.05)
=20+10
=30
8x-3.2+2x=15.7
8x+2x=15.7+3.2
10x=18.9
x=18.9÷10
x=1.89
10.19+26.05-(16.05-9.81)
= 10.19+26.05-16.05+9.81
=(10.19+9.81)+(26.05-16.05)
=20+10
=30
8x-3.2+2x=15.7
8x+2x=15.7+3.2
10x=18.9
x=18.9÷10
x=1.89