1)6×(9-2x)+7×(4x+3)=-23
54 – 12x + 28x + 21 = – 23
– 12x + 28x = – 23 – 21 – 54
16x = -98
x = -6.125
2)4×(2x+3)-6×(3+x)-x=-6
8x + 12 – 18 – 6x – x = – 6
8x – 6x – x = – 6 + 18 – 12
x = 0
3)-3×(3y-12)+8×(y+3)+23=-9
– 9y + 36 + 8y + 24 + 23 = – 9
– 9y + 8y = – 9 – 23 – 24 – 36
-y = -92
y = 92
4)5×(4y-2,4)-2,5×(4-8y)-7=-149
20y – 12 – 10 + 20y – 7 = – 149
20y + 20y = – 149 + 7 + 10 + 12
40y = -120
y = -3
1)6×(9-2x)+7×(4x+3)=-23
54 – 12x + 28x + 21 = – 23
– 12x + 28x = – 23 – 21 – 54
16x = -98
x = -6.125
2)4×(2x+3)-6×(3+x)-x=-6
8x + 12 – 18 – 6x – x = – 6
8x – 6x – x = – 6 + 18 – 12
x = 0
3)-3×(3y-12)+8×(y+3)+23=-9
– 9y + 36 + 8y + 24 + 23 = – 9
– 9y + 8y = – 9 – 23 – 24 – 36
-y = -92
y = 92
4)5×(4y-2,4)-2,5×(4-8y)-7=-149
20y – 12 – 10 + 20y – 7 = – 149
20y + 20y = – 149 + 7 + 10 + 12
40y = -120
y = -3