The value of the unknown variable from the equation is 1.95
Solving algebraic expression
Given the expression below:
1.5 ( x - 4) = 1.8 - 2.5 x
Expand and solve
1.5x - 6.0 = 1.8 - 2.5x
1.5x + 2.5x = 1.8 + 6.0
4.0x = 7.8
Divide both sides by 4
4.0x/4 = 7.8/4
x = 1.95
Hence the value of the unknown variable from the equation is 1.95
Complete question
Solve the expression 1.5 ( x - 4) = 1.8 - 2.5 x