Let's first simplify the equations given:
1) 0.4(x-9) - 0.3(x+2) = 0.0.4x - 3.6 - 0.3x - 0.6 = 0.0.1x - 4.2 = 0.0.1x = 4.x = 49
2) 2/3(6.9c - 1.5b) - 4.8(5/8c - 2.5b(2/3)6.9c - (2/3)1.5b - 4.8(5/8)c + 4.82.54.6c - 1b - 3c + 121.6c + 11b
Therefore, the solutions are1) x = 42) 1.6c + 11b
Let's first simplify the equations given:
1) 0.4(x-9) - 0.3(x+2) = 0.
0.4x - 3.6 - 0.3x - 0.6 = 0.
0.1x - 4.2 = 0.
0.1x = 4.
x = 49
2) 2/3(6.9c - 1.5b) - 4.8(5/8c - 2.5b
(2/3)6.9c - (2/3)1.5b - 4.8(5/8)c + 4.82.5
4.6c - 1b - 3c + 12
1.6c + 11b
Therefore, the solutions are
1) x = 4
2) 1.6c + 11b