Solving equation 1. (x + 3.2) △ 3 = 8 2. (x-0.6) △ 0.4 = 1.2
1.(x+3.2)÷3=8
x+3.2=24
x=20.8
2.(x-0.6)÷0.4=1.2
x-0.6=0.48
x=1.08
1、 Solving equation 3.8 + x = 6.3
3.8+x=6.3
X=6.3-3.8
=2.5
Solution equation: 4.8 + x-2.5 = 6.3-2.8
X=6.3-2.8-4.8+2.5
X=1.2
Solving equation x = 420-x
x=420-x
2X = 420 plus x on both sides
X = 210 divide both sides by 2